Crossword Genius

Wind instrument? (4)

Ross

'wind instrument?' 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 "Turbine blade" , "Blade of a propeller" , "Part of a weathercock" , "Windmill sail in 30 across" , "It shows wind direction" .)

I've seen this clue in The Independent, The Telegraph, the Evening Standard, the Universal, The Star Tribune, The Times and The Guardian.
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