/ Dictionary / Index A Antrim: Meaning and Definition of Find definitions for: An•trim Pronunciation: (an'trim), [key] — n. a county in NE Northern Ireland. 355,716; 1098 sq. mi. (2844 sq. km). Co. seat: Belfast. an administrative district in this county. 35,000; 217 sq. mi. (563 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. antre Antron Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language