windsock /ˈwɪndˌsɒk/ (also wind sock)

• 1. 

  N-COUNT A windsock is a device, consisting of a tube of cloth mounted on a pole, that is used at airports and airfields to indicate the direction and force of the wind. 风标

  例：

  The hangar had a windsock on the roof.

  飞机库房顶上有一只风标。