
1) Boat 2) Lake transit 3) Lake transport 4) Nautical terminology 5) Powerboat 6) Ride in a motorboat 7) Runabout or walkaround 8) Vessel used by water-skiers
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https://www.crosswordclues.com/clue/motorboat

1) Launch 2) Powerboat 3) Scooter 4) Speedboat
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https://www.crosswordclues.com/clue/motorboat

A motorboat, speedboat, or powerboat is a boat which is powered by an engine. Some motorboats are fitted with inboard engines, others have an outboard motor installed on the rear, containing the internal combustion engine, the gearbox and the propeller in one portable unit. An inboard/outboard contains a hybrid of a powerplant and an outboard, whe...
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http://en.wikipedia.org/wiki/Motorboat

a relatively small watercraft propelled by an internal-combustion or electric engine. Motorboats range in size from miniature craft designed to carry ...
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http://www.britannica.com/eb/a-z/m/127

[
n] - a boat propelled by an internal-combustion engine
Found on
http://www.webdictionary.co.uk/definition.php?query=motorboat
powerboat noun a boat propelled by an internal-combustion engine
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https://www.encyclo.co.uk/local/20974

Small, waterborne craft for pleasure cruising or racing, powered by a petrol, diesel, or gas-turbine engine. A boat not equipped as a motorboat may be converted by a detachable outboard motor. For increased speed, such as in racing, motorboat hulls are designed to skim the water (aquaplane) and reduce frictional resistance. Plastics, steel, and...
Found on
https://www.encyclo.co.uk/local/21221

a boat propelled by an inboard or outboard motor.
Found on
https://www.infoplease.com/dictionary/motorboat
No exact match found.