/ Dictionary / Index F Fort Leavenworth: Meaning and Definition of Find definitions for: Fort" Leav'enworth Pronunciation: [key] a military reservation and U.S. Army training center in E Kansas adjoining Leavenworth, one of the oldest (1827) military posts W of the Mississippi and site of federal penitentiary. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Fort Lauderdale Fort Lee Related Content Daily Word Quiz: penchant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language