Wind indicator (4)
'wind indicator' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sock that I've seen before include "Garment; hard blow" , "This partly protects member" , "Foot covering" , "Hit hard; woollen item" , "Hit; horse's leg marking" .)
'wind indicator' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for vane that I've seen before include "Part of a weathercock" , "Turbine blade" , "The weather-cock sounds conceited" , "Weather-cock sounds full of itself" , "Indicator of wind direction" .)