A wheel driven by water and used to power machinery, esp. that of a mill or pump.

a waterwheel.

A type of waterwheel in which water strikes the wheel near the level of its axle (rather than from above or beneath). Cf. earlier breast mill n. at b…

An overshot mill, wheel, or other machine. Also: a stream of water used to drive an overshot wheel. Obsolete.

Driven by water passing under.

Of a waterwheel: driven by water striking it near the level of its axle (rather than from above or below). Occasionally also as n.: such a…

an ancient contrivance for raising water, consisting of buckets fixed round a wheel, or attached to a rope passing round a wheel, which fill at…

(a) the wheel of a colliery ‘tub’; (b) a horizontal waterwheel with spiral floats; = danaide, n.; (c) a rotating drum in which hides are washed (Funk…

(see quot. 1874).

A kind of horizontal waterwheel, consisting of a vertical axis to which is attached a conical drum and case, with radial spiral floats; the water…

Various mechanical contrivances. = paddle wheel, n.

= reaction wheel n.

a waterwheel impelled by the action of escaping water; cf. impulse-wheel n. at impulse, n. compounds 2.

a waterwheel turned by the flowing and ebbing of the tide through a narrow channel.

(More fully hurdy-gurdy wheel.) An impact wheel driven by a tangential jet of water which issues under pressure from a nozzle and strikes a…

(see quot. 1875).

A wheel fitted with a number of paddles or projections, and made to rotate through immersion, or partial immersion, in a current of water.

attributive. Designating a type of undershot waterwheel driven by one or more jets of water directed at buckets fixed to the rim.

a turbine waterwheel used to raise water by being driven by external power in the direction opposite to that in which it turns when used as a motor.