Breadcrumb Home > Dictionary > Index P pataca: Meaning and Definition of Find definitions for: pa•ta•ca Pronunciation: (pu-tä'ku), [key] — n. a nickel, silver, or cupronickel coin and monetary unit of Macao, equal to 100 avos. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: pataca (Thesaurus) pat pat-a-cake ✖ Related Content Daily Word Quiz: guilloche Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language