Definition of "hydroplane" [hy•dro•plane]

• See seaplane. (noun)
• A motorboat designed so that the prow and much of the hull lift out of the water and skim the surface at high speeds. (noun)
• See hydrofoil. (noun)
• A horizontal rudder on a submarine. (noun)
• To drive or ride in a hydroplane. (verb-intransitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "-- Hydro means water, hence the term hydroplane has been given to machines which have suitable pontoons or boats, so they may alight or initiate flight from water."
• "And that machine is what we call a hydroplane -- that is, it will prove to be as much at home on the water as in the air. ""
• "There were two huge water spouts where you drive into them and all of the cars kind of hydroplane somewhat."