n. - An artifical passage for water, fitted with a valve or gate, as in a mill stream, for stopping or regulating the flow; also, a water gate or flood gate.
n. - Hence, an opening or channel through which anything flows; a source of supply.
n. - The stream flowing through a flood gate.
n. - A long box or trough through which water flows, -- used for washing auriferous earth.
v. t. - To emit by, or as by, flood gates.
v. t. - To wet copiously, as by opening a sluice; as, to sluice meadows.
v. t. - To wash with, or in, a stream of water running through a sluice; as, to sluice eart or gold dust in mining.