/ Dictionary / Index F French letter: Meaning and Definition of Find definitions for: French' let'ter Pronunciation: [key] — Older Slang. Older Slang. a condom. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. French leave Frenchman Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language