/ Dictionary / Index T trench mouth: Meaning and Definition of Find definitions for: trench' mouth". Pronunciation: [key] See Vincent's angina. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trench mortar trench warfare Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language