/ Dictionary / Index O oregano: Meaning and Definition of Find definitions for: o•reg•a•no Pronunciation: (u-reg'u-nō", ô-reg'-), [key] — n. an aromatic herb, Origanum vulgare, of the mint family, having leaves used as seasoning in cooking. Also calledCf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: oregano (Thesaurus) Oreg. Oregon Related Content Daily Word Quiz: penury Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language