/ Dictionary / Index O oink: Meaning and Definition of Find definitions for: oink Pronunciation: (oingk), [key] — v.i. to make the characteristic sound of a pig; grunt. —n. the squealing or grunting sound made by a pig. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oink (Thesaurus) oily oinochoe Related Content Daily Word Quiz: abstain Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language