A hydroplane is a speedboat which rises out of the water when it is travelling fast.
hydroplane in British English
(ˈhaɪdrəʊˌpleɪn)
noun
1.
a motorboat equipped with hydrofoils or with a shaped bottom that raises its hull out of the water at high speeds
2.
an attachment to an aircraft to enable it to glide along the surface of water
3. another name (esp US) for a seaplane
4.
a horizontal vane on the hull of a submarine for controlling its vertical motion
verb
5. (intransitive)
(of a boat) to rise out of the water in the manner of a hydroplane
hydroplane in American English
(ˈhaɪdrəˌpleɪn)
US
noun
1.
a small, light motorboat with hydrofoils or with a flat bottom rising in steps to the stern so that it can skim along the water's surface at high speeds
2.
seaplane
3.
an attachment for an airplane that enables it to glide along on the water
4.
a horizontal rudder used to submerge or raise a submarine
verb intransitiveWord forms: ˈhydroˌplaned or ˈhydroˌplaning
5.
to drive or ride in a hydroplane
6.
to skim along on a film of liquid without touching the surface beneath, as vehicle tires on a wet road
Word origin
hydro- + plane2
Examples of 'hydroplane' in a sentence
hydroplane
Others hurried recklessly along in sudden bursts of speed, using their flat leather sandals to skid and hydroplane across the ice.