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

 

watercourse

 noun
noun
BrE BrE//ˈwɔːtəkɔːs//
 
; NAmE NAmE//ˈwɔːtərkɔːrs//
 
, NAmE//ˈwɑːtərkɔːrs//
 
(specialist) Rivers and lakes
 
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a stream or an artificial channel for water Our priority is to control pollution in direct discharges to watercourses. See related entries: Rivers and lakes
See the Oxford Advanced American Dictionary entry: watercourse