Tide mill

(a)	A mill operated by the tidal currents.
	A mill for clearing lands from tide water.

tide mill

A mill, such as a gristmill or sawmill, operated by a waterwheel powered by tidal water confined in a reservoir after high tide. An incoming tide opens a gate, permitting tidal water to fill the reservoir; when the direction of the tide changes, the gate is closed by hand, and then the outflowing tidal water turns the mill’s waterwheel.

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