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

 

wadi

 noun
noun
BrE BrE//ˈwɒdi//
 
; NAmE NAmE//ˈwɑːdi//
 
 
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(in the Middle East and N Africa) a valley or channel that is dry except when it rains Word Origin early 17th cent.: from Arabic wādī.
See the Oxford Advanced American Dictionary entry: wadi