sluice gate

noun

1. an artificial channel or passage for water, having a gate or valve at its head to regulate the flow, as in a canal or millstream
2. the water held back by or passing through such a gate
3. a gate or valve used in opening or closing a sluice; floodgate
   also sluice gate
4. any channel, esp. one for excess water
5. ☆ a sloping trough or flume through which water is run, as in washing gold ore, carrying logs, etc.

Origin: ME scluse < OFr escluse & LL exclusa < fem. pp. of L excludere, to shut out, exclude

transitive verb sluiced, sluicing

1. to draw off by or as by means of a sluice
2. 1. to wash with water flowing in or from a sluice
   2. to wash off with a rush of water: to sluice a deck with hoses
3. ☆ to carry (logs, etc.) in a sluice

intransitive verb