I. ˈhī-drə-ˌplān noun
Date: 1904
1. : a powerboat designed for racing that skims the surface of the water
2. : seaplane
II. intransitive verb
Date: 1962
: to skim on water ; especially of a vehicle : to skid on a wet surface (as pavement) because a film of water on the surface causes the tires to lose contact with it