- a boat propelled by an inboard or outboard motor
WordReference Random House Unabridged Dictionary of American English © 2026
pow•er•boat
(pou′ər bōt′),USA pronunciation n.
pow′er•boat′ing, n.
- Nautical, Naval Termsa boat propelled by mechanical power.
- Nautical, Naval Termsmotorboat.
- power + boat 1905–10
Collins Concise English Dictionary © HarperCollins Publishers::
powerboat /ˈpaʊəˌbəʊt/ n
'powerboat' also found in these entries (note: many are not synonyms or translations):