/ Dictionary / Index F flank speed: Meaning and Definition of Find definitions for: flank' speed" Pronunciation: [key] the maximum possible speed of a ship. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flanker flannel 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