A barrier or dam to restrain water, esp. one placed across a river or canal in order to raise or divert the water for driving a mill-wheel; also, the…

The body of water confined by a dam or embankment. (Now local, Yorkshire, etc.)

A pool of water retained by a mill-dam for driving a watermill; (North American) a pond adjoining a sawmill in which logs to be milled are kept. Also…

Now chiefly English regional.(a) A body of still water, usually of artificial formation; a pond; cf. pond, n. 1a, 1c. (b) A body of water confined…

A place in which water is pent up; a reservoir or enclosed pool. Cf. pend, n.1 1, 2, pen, n.2 2. Now rare.

Perhaps: = watershoot, n. 2a.

an outfall from a river, canal, or reservoir; a weir; also, the pool into which the water falls from this.

An artificial accumulation of water dammed back for any purpose.

a pond formed by a dam at the head of a mill-lead.