You searched for: “sluices
sluice (s) (noun), sluices (pl)
1. An artificial passage or channel for conducting water, fitted with a valve or gate in order to regulate the flow of water: "The stream by the mill had a sluice consisting of a water gate or flood gate that was used for stopping or regulating the flow of the water."
2. An opening or a channel through which anything flows; such as, a source of supply for something.
3. A long box or trough through which water flows: "The miners used a long-inclined trough to separate gold from the earth."
4. Etymology: an alteration of Old French escluse, "sluice, floodgate", from Late Latin exclusa, "barrier to shut out water" (in aqua exclusa, "water shut out"), from feminine singular of Latin exclusus, excludere, "to shut out".
sluice (verb), sluices; sluiced; sluicing
1. To wash or to spray someone or something with streams of water: "He sluiced the mud from his concrete drive way."
2. To flow or to pour down heavily: "The rain came sluicing down during the thunder storm."