Water wheel

	1.	Any wheel for propelling machinery or for other purposes, that is made to rotate by the direct action of water; - called an overshot wheel when the water is applied at the top, an undershot wheel when at the bottom, a breast wheel when at an intermediate point; other forms are called reaction wheel, vortex wheel, turbine wheel, etc.
	2.	The paddle wheel of a steam vessel.
	3.	A wheel for raising water; a noria, or the like.

Noun	1.	water wheel - a wheel with buckets attached to its rim; raises water from a stream or pond Synonyms: waterwheel
	2.	water wheel - a wheel that rotates by direct action of water; a simple turbine Synonyms: waterwheel

waterwheel, wheel