1.Definition: a speedboat that is equipped with winglike structures that lift it so that it skims the water at high speeds

"The museum houses a replica of the jet hydroplane that broke the record"

Related Noun(s):hydrofoil

Category: Objects

2.Definition: an airplane that can land on or take off from water

"The designer of marine aircraft demonstrated his newest hydroplane"

Related Noun(s):seaplane

Category: Objects