give one's best
— Verb
– English
～ perform a task as well as possible; "The cast gives full measure every night"
green onion
— Noun
– English
～ a young onion before the bulb has enlarged; eaten in salads
genus Oniscus
— Noun
– English
～ type genus of the Oniscidae; woodlice that cannot roll into a ball
genus Onobrychis
— Noun
– English
～ genus of Old World herbs having pinnate leaves and pink or whites racemose flowers followed by flat unjointed pods
genus Onoclea
— Noun
– English
～ one species: sensitive fern; in some classifications included in Polypodiaceae
genus Ononis
— Noun
– English
～ genus of European subshrubs or herbs having pink or purple or yellow solitary or clustered flowers: restharrow
genus Onopordon
— Noun
– English
～ a genus of Eurasian herbs of the family Compositae with prickly foliage and large purplish flowers
genus Onopordum
— Noun
– English
～ a genus of Eurasian herbs of the family Compositae with prickly foliage and large purplish flowers
genus Onosmodium
— Noun
– English
～ a genus of North American perennial herbs of the family Boraginaceae
growth-onset diabetes
— Noun
– English
～ severe diabetes mellitus with an early onset; characterized by polyuria and excessive thirst and increased appetite and weight loss and episodic ketoacidosis; diet and insulin injections are required to control the disease
get onto
— Verb
– English
～ understand, usually after some initial difficulty; "She didn't know what her classmates were plotting but finally caught on"
genus Onychium
— Noun
– English
～ small terrestrial ferns of Old World tropics and subtropics: clawed ferns; sometimes placed in family Cryptogrammataceae