noun
plural sluices
[count] an artificial passage for water to flow through with a gate for controlling the flow
a device (such as a floodgate) used for controlling the flow of water
verb
sluices; sluiced; sluicing
[+ obj] :to wash or spray (something or someone) with a stream of water
always followed by an adverb or preposition [no obj] :to flow or pour down heavily
US