sluices is a form of:

Sluice



noun
1.
(the water controlled by this, an overflow channel, a darn and water gate, or the gate alone, for regulating the flow of water, valve or shutter for regulating flow) សន្ទះ ទំនប់ទឹក, ផ្លូវទឹកដែលមានសន្ទះបិទបើក
verbpast tense: sluiced ; past participle: sluiced ; present participle: sluicing ;
1.
(TRANSITIVE) (1. To flood or drench with or as if with a flow of released water. 2. To wash with water flowing in a sluice: sluicing sediment for gold. 3. To draw off or let out by a sluice: sluice floodwater. 4. To send [logs, for example] down a sluice) ដាក់សន្ទះទប់ទឹក
ENGLISH MEANING
noun
1.
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.
2.
Hence, an opening or channel through which anything flows; a source of supply.
3.
The stream flowing through a flood gate.
4.
A long box or trough through which water flows, -- used for washing auriferous earth.
verbpast tense: sluiced ; past participle: sluiced ; present participle: sluicing ;
1.
(TRANSITIVE) To emit by, or as by, flood gates.
2.
(TRANSITIVE) To wet copiously, as by opening a sluice; as, to sluice meadows.
3.
(TRANSITIVE) To wash with, or in, a stream of water running through a sluice; as, to sluice eart or gold dust in mining.