motorboat

from WordNet (r) 3.0 (2006)

motorboat
    n 1: a boat propelled by an internal-combustion engine [syn:
         {motorboat}, {powerboat}]
    v 1: ride in a motorboat

from The Collaborative International Dictionary of English v.0.48

motorboat \motorboat\ n.
   a boat propelled by an internal-combustion engine driving
   propellers immersed in the water.

   Syn: powerboat.
        [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

35 Moby Thesaurus words for "motorboat":
      boat, cabin cruiser, canoe, carry sail, circumnavigate, coast,
      cross, cruise, cruiser, go by ship, go on shipboard, go to sea,
      launch, make a passage, motor launch, navigate, ply, power cruiser,
      powerboat, row, run, sail, sail round, sail the sea, scull,
      seafare, sedan cruiser, speedboat, steam, steam launch, steamboat,
      take a voyage, traverse, voyage, yacht