Definition of sluice noun from the Oxford Advanced Learner's Dictionary

 

sluice

 noun
noun
BrE BrE//sluːs//
 
; NAmE NAmE//sluːs//
 
Rivers and lakes
 
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(also sluice gate) a sliding gate or other device for controlling the flow of water out of or into a canal, etc. We opened the sluices and the upstream water of the river poured into the lock. See related entries: Rivers and lakes Word Origin Middle English (as a noun): from Old French escluse ‘sluice gate’, based on Latin excludere ‘exclude’. The verb dates from the late 16th cent.
See the Oxford Advanced American Dictionary entry: sluice

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