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1. A personal watercraft.
2. A frame consisting of a narrow platform for the feet, a handlebar, and a hydrofoil, that is propelled by jumping up and pressing down.
3. A hand-held, battery-operated device that spins a propeller to pull a swimmer through the water.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.