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water motor

American  

noun

  1. any form of prime mover or motor that is operated by the kinetic energy, pressure, or weight of water, especially a small turbine or waterwheel fitted to a pipe supplying water.

Etymology

Origin of water motor

First recorded in 1880–85

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.