/ Dictionary / Index A assault boat: Meaning and Definition of Find definitions for: assault' boat" Pronunciation: [key] a portable boat used for landing troops on beaches and for crossing rivers. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. assault and battery assaultive Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language