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water wheel
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- Water wheel - - 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.
- Water wheel - - The paddle wheel of a steam vessel.
- Water wheel - - A wheel for raising water; a noria, or the like.
- Water motor - - A water wheel; especially, a small water wheel driven by water from a street main.
- Wicket - n. - A small gate by which the chamber of canal locks is emptied, or by which the amount of water passing to a water wheel is regulated.
- Bucket - n. - One of the receptacles on the rim of a water wheel into which the water rushes, causing the wheel to revolve; also, a float of a paddle wheel.
- Backboard - n. - A board attached to the rim of a water wheel to prevent the water from running off the floats or paddies into the interior of the wheel.
- Hurdy-gurdy - n. - In California, a water wheel with radial buckets, driven by the impact of a jet.
- Danaide - n. - A water wheel having a vertical axis, and an inner and outer tapering shell, between which are vanes or floats attached usually to both shells, but sometimes only to one.