1. [verb] To skim the surface of a body of water while moving at high speed.
2. [noun] (nautical): A specific type of motorboat used exclusively for racing.
3. [noun] A hydrofoil
4. [noun] A seaplane
5. [noun] The wing of a submarine, used to help control depth.
6. [noun] An airplane that can land on or take off from water; 'the designer of marine aircraft demonstrated his newest hydroplane'.
7. [noun] 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'.
8. [verb] Glide on the water in a hydroplane.
