n. & v.
n. 1 (also sluice-gate, sluice-valve) a sliding gate or other contrivance for controlling the volume or flow of water. 2 (also sluice-way) an artificial water-channel esp. for washing ore. 3 a place for rinsing. 4 the act or an instance of rinsing. 5 the water above or below or issuing through a floodgate.
v. 1 tr. provide or wash with a sluice or sluices. 2 tr. rinse, pour or throw water freely upon. 3 tr. (foll. by out, away) wash out or away with a flow of water. 4 tr. flood with water from a sluice. 5 intr. (of water) rush out from a sluice, or as if from a sluice.
[ ME f. OF escluse ult. f. L excludere EXCLUDE ]