/ Dictionary / Index T towboat: Meaning and Definition of Find definitions for: tow•boat Pronunciation: (tō'bōt"), [key] — n. a diesel-powered or steam-powered boat used esp. on inland waterways to push groups of barges lashed to it in front or on one side or both. tugboat. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: towboat (Thesaurus) tow bar tow bug Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language