/ Dictionary / Index O oy: Meaning and Definition of Find definitions for: oy Pronunciation: (oi), [key] — interj. (used to express dismay, pain, annoyance, grief, etc.) oy Pronunciation: (oi), [key] — n. Scot. a grandchild. a nephew or niece. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oxyuriasis Oyama Related Content Daily Word Quiz: arid Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language