English words starting with O

o level

1. noun: the basic level of a subject taken in school

o ring

1. noun: a gasket consisting of a flat ring of rubber or plastic; used to seal a joint against high pressure

o'brien

1. noun: Irish writer (born in 1932)

o'casey

1. noun: Irish playwright (1880-1964)

o'clock

1. adverb: according to the clock; "it's three o'clock in Tokyo now"

o'connor

1. noun: United States writer (1925-1964)

o'er

1. adverb: throughout a period of time; "stay over the weekend"

o'flaherty

1. noun: Irish writer of short stories (1896-1984)

o'hara

1. noun: United States writer (1905-1970)

o'keeffe

1. noun: United States painter (1887-1986)

o'neill

1. noun: United States playwright (1888-1953)

o'toole

1. noun: British actor (born in Ireland in 1932)

oaf

1. noun: an awkward stupid person

oafish

1. adjective: ill-mannered and coarse and contemptible in behavior or appearance; "was boorish and insensitive"; "the loutish manners of a bully"; "her stupid oafish husband"; "aristocratic contempt for the swinish multitude"

oafishly

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oafishness

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oafs

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oahu

1. noun: an island of central Hawaii (between Molokai and Kauai); the chief island of the state

oahu island

1. noun: an island of central Hawaii (between Molokai and Kauai); the chief island of the state

oak

1. noun: the hard durable wood of any oak; used especially for furniture and flooring
2. noun: a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns"

oak apple

1. noun: oak gall caused by larvae of a cynipid wasp

oak blight

1. noun: a black plant louse that lives on oaks and dogwoods

oak chestnut

1. noun: a tree of the genus Castanopsis

oak fern

1. noun: bright blue-green fern widely distributed especially in damp acid woodlands of temperate northern hemisphere

oak leaf cluster

1. noun: a United States military decoration consisting of bronze or silver oak leaves and acorns awarded to anyone who has won a given medal before

oak tree

1. noun: a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns"

oak-leaved goosefoot

1. noun: annual European plant with spikes of greenish flowers and leaves that are white and hairy on the underside; common as a weed in North America

oaken

1. adjective: consisting of or made of wood of the oak tree; "a solid oak table"; "the old oaken bucket"

oakland

1. noun: a city in western California on San Francisco Bay opposite San Francisco; primarily and industrial urban center

oakleaf goosefoot

1. noun: annual European plant with spikes of greenish flowers and leaves that are white and hairy on the underside; common as a weed in North America

oakley

1. noun: United States sharpshooter who was featured in Buffalo Bill's Wild West Show (1860-1926)

oaks

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oakum

1. noun: loose hemp or jute fiber obtained by unravelling old ropes; when impregnated with tar it was used to caulk seams and pack joints in wooden ships

oar

1. noun: an implement used to propel or steer a boat

oared

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oarfish

1. noun: thin deep-water tropical fish 20 to 30 feet long having a red dorsal fin

oaring

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oarlock

1. noun: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing

oarlocks

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oars

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oarsman

1. noun: someone who rows a boat

oarsmanship

1. noun: skill as an oarsman

oarsmen

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oarswoman

1. noun: a woman oarsman

oarswomen

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oas

1. noun: an association including most countries in the western hemisphere; created in 1948 to promote military and economic and social and cultural cooperation

oases

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oasis

1. noun: a fertile tract in a desert (where the water table approaches the surface)
2. noun: a shelter serving as a place of safety or sanctuary

oast

1. noun: a kiln for drying hops

oast house

1. noun: a building containing an oast (a kiln for drying hops); usually has a conical or pyramidal roof

oat

1. noun: annual grass of Europe and North Africa; grains used as food and fodder (referred to primarily in the plural: `oats')
2. noun: seed of the annual grass Avena sativa (spoken of primarily in the plural as `oats')

oat cell carcinoma

1. noun: highly malignant carcinoma composed of small round or egg-shaped cells with little cytoplasm; lung cancers are frequently oat cell carcinomas

oatcake

1. noun: thin flat unleavened cake of baked oatmeal

oatcakes

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oaten

1. adjective: of or related to or derived from oats; "oaten bread"

oates

1. noun: English conspirator who claimed that there was a Jesuit plot to assassinate Charles II (1649-1705)
2. noun: United States writer (born in 1938)

oath

1. noun: profane or obscene expression usually of surprise or anger; "expletives were deleted"
2. noun: a commitment to tell the truth (especially in a court of law); to lie under oath is to become subject to prosecution for perjury

oaths

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oatmeal

1. noun: porridge made of rolled oats
2. noun: meal made from rolled or ground oats

oatmeal cookie

1. noun: cookies containing rolled oats

oats

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oaxaca

1. noun: a city of southeastern Mexico

oaxaca de juarez

1. noun: a city of southeastern Mexico

ob

1. noun: a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea
2. noun: the branch of medicine dealing with childbirth and care of the mother

ob river

1. noun: a major river of western Siberia; flows generally northward and westward to the Gulf of Ob and the Kara Sea

obadiah

1. noun: a Hebrew minor prophet
2. noun: an Old Testament book telling Obadiah's prophecies; the shortest book in the Christian Bible

obama

1. noun: 44th President of the United States; first African-American President

obbligato

1. noun: a persistent but subordinate motif
2. noun: a part of the score that must be performed without change or omission

obbligatos

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obduracy

1. noun: resoluteness by virtue of being unyielding and inflexible

obdurate

1. adjective: stubbornly persistent in wrongdoing
2. adjective: showing unfeeling resistance to tender feelings; "his flinty gaze"; "the child's misery would move even the most obdurate heart"

obdurately

1. adverb: in a stubborn unregenerate manner; "she remained stubbornly in the same position"

obdurateness

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obeah

1. noun: (West Indies) followers of a religious system involving witchcraft and sorcery
2. noun: a religious belief of African origin involving witchcraft and sorcery; practiced in parts of the West Indies and tropical Americas

obeche

1. noun: the wood of an African obeche tree; used especially for veneering
2. noun: large west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds; yields soft white to pale yellow wood

obechi

1. noun: large west African tree having large palmately lobed leaves and axillary cymose panicles of small white flowers and one-winged seeds; yields soft white to pale yellow wood

obedience

1. noun: the act of obeying; dutiful or submissive behavior with respect to another person
2. noun: the trait of being willing to obey

obedience plant

1. noun: white-flowered West Indian plant whose root yields arrowroot starch

obedient

1. adjective: dutifully complying with the commands or instructions of those in authority; "an obedient soldier"; "obedient children"; "a little man obedient to his wife"; "the obedient colonies...are heavily taxed; the refractory remain unburdened"- Edmund Burke

obedient plant

1. noun: North American plant having a spike of two-lipped pink or white flowers

obediently

1. adverb: in an obedient manner; "obediently she slipped off her right shoe and stocking"

obeisance

1. noun: bending the head or body or knee as a sign of reverence or submission or shame or greeting
2. noun: the act of obeying; dutiful or submissive behavior with respect to another person

obeisances

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obeisant

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obelion

1. noun: the craniometric point on the sagittal suture near the lamboid suture

obelisk

1. noun: a stone pillar having a rectangular cross section tapering towards a pyramidal top
2. noun: a character used in printing to indicate a cross reference or footnote

obelisks

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oberson

1. noun: (Middle Ages) the king of the fairies and husband of Titania in medieval folklore

obese

1. adjective: excessively fat; "a weighty man"

obesity

1. noun: more than average fatness

obesity diet

1. noun: a diet designed to help you lose weight (especially fat)

obey

1. verb: be obedient to

obeyed

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obeying

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obeys

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obfuscate

1. verb: make obscure or unclear

obfuscated

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obfuscates

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obfuscating

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obfuscation

1. noun: confusion resulting from failure to understand
2. noun: the activity of obscuring people's understanding, leaving them baffled or bewildered

obfuscations

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obi

1. noun: (West Indies) followers of a religious system involving witchcraft and sorcery
2. noun: a religious belief of African origin involving witchcraft and sorcery; practiced in parts of the West Indies and tropical Americas

obidoxime chloride

1. noun: a chloride used as an antidote for nerve gases such as sarin or VX

obiism

1. noun: belief in a kind of sorcery that originated in Africa and is practiced in the West Indies

obis

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obit

1. noun: a notice of someone's death; usually includes a short biography

obiter dictum

1. noun: an incidental remark
2. noun: an opinion voiced by a judge on a point of law not directly bearing on the case in question and therefore not binding

obits

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obituaries

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obituary

1. noun: a notice of someone's death; usually includes a short biography

obj

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object

1. noun: a tangible and visible entity; an entity that can cast a shadow; "it was full of rackets, balls and other objects"
2. noun: the goal intended to be attained (and which is believed to be attainable); "the sole object of her trip was to see her children"

object ball

1. noun: the billiard ball that is intended to be the first ball struck by the cue ball

object code

1. noun: the machine-language output of a compiler that is ready for execution on a particular computer

object glass

1. noun: the lens or system of lenses in a telescope or microscope that is nearest the object being viewed

object language

1. noun: a computer language into which something written in another computer language is to be translated
2. noun: the language into which a text written in another language is to be translated

object lens

1. noun: the lens or system of lenses in a telescope or microscope that is nearest the object being viewed

object lesson

1. noun: punishment intended as a warning to others; "they decided to make an example of him"

object of a preposition

1. noun: the object governed by a preposition

object of the verb

1. noun: the object that receives the direct action of the verb