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

 

windsock

 noun
noun
BrE BrE//ˈwɪndsɒk//
 
; NAmE NAmE//ˈwɪndsɑːk//
 
 
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a tube made of soft material, open at both ends, that hangs at the top of a pole, to show the direction of the wind
See the Oxford Advanced American Dictionary entry: windsock