windsock
wind‧sock /ˈwɪndsɒk $ -sɑːk/
noun [countable]
a tube of material fastened to a pole at airports to show the direction of the wind
wind‧sock /ˈwɪndsɒk $ -sɑːk/
noun [countable]a tube of material fastened to a pole at airports to show the direction of the wind