WordNet (r) 3.0 (2006):

scooter
    n 1: a motorboat resembling a motor scooter [syn: water
         scooter, sea scooter, scooter]
    2: child's two-wheeled vehicle operated by foot
    3: a wheeled vehicle with small wheels and a low-powered
       gasoline engine geared to the rear wheel [syn: motor
       scooter, scooter]
    4: a sailing vessel with runners and a cross-shaped frame;
       suitable for traveling over ice [syn: iceboat, ice yacht,
       scooter]
    5: large black diving duck of northern parts of the northern
       hemisphere [syn: scoter, scooter]