1. noun
a) An artificial 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.
Each sluice of affluent fortune opened soon. -Harte.
b) Hence, an opening or channel through which anything flows; a source of supply.
This home familiarity . . . opens the sluices of sensibility. -I. Taylor.
2. verb
a) To emit by, or as by, flood gates. -Milton.
He dried his neck and face, which he had been sluicing with cold water. -De Quincey.
b) To wet copiously, as by opening a sluice; as, to sluice meadows. Howitt.
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