| Noun | 1. | motorboat - a boat propelled by an internal-combustion engineboat - a small vessel for travel on water cabin cruiser, pleasure boat, pleasure craft, cruiser - a large motorboat that has a cabin and plumbing and other conveniences necessary for living on board helm - steering mechanism for a vessel; a mechanical device by which a vessel is steered internal-combustion engine, ICE - a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine launch - a motorboat with an open deck or a half deck outboard, outboard motorboat - a motorboat with an outboard motor speedboat - a fast motorboat windscreen, windshield - transparent screen (as of glass) to protect occupants of a vehicle |
| Verb | 1. | motorboat - ride in a motorboat boat - ride in a boat on water |