/ Dictionary / Index T trench coat: Meaning and Definition of Find definitions for: trench' coat" Pronunciation: [key] a waterproof overcoat styled along military lines, belted, with straps on the shoulders and lower sleeves. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Trenchard trencher Related Content Daily Word Quiz: panacea Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language