- a high-speed motorboat having either an inboard or outboard motor
WordReference Random House Learner's Dictionary of American English © 2026
speed•boat /ˈspidˌboʊt/USA pronunciation
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- Nautical, Naval Termsa motorboat designed for high speeds.
speed•boat
(spēd′bōt′),USA pronunciation n.
- Nautical, Naval Termsa motorboat designed for high speeds.
- speed boat + -ing1 1910–15
Collins Concise English Dictionary © HarperCollins Publishers::
speedboat /ˈspiːdˌbəʊt/ n
'speedboat' also found in these entries (note: many are not synonyms or translations):