Afraid of draughts? (5)

I believe the answer is:

windy

I'm a little stuck... Click here to teach me more about this clue!

'afraid' is the definition.
Both the answer and definition are adjectives. Perhaps there's a link between them I don't understand?

I don't understand the rest of the clue.

Can you help me to learn more?

(Other definitions for windy that I've seen before include "Frightened - not still" , "Chicago, the _____ City" , "Conceited - nervous - registering on the Beaufort scale" , "Gusty" , "far from calm" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app