It's not on the draughty side (3)

I believe the answer is:

lee

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'side' is the definition.
(I know that lee is a type of side)

I don't understand the rest of the clue.

(Other definitions for lee that I've seen before include "Sheltered from the wind in Cork, perhaps" , "Robert E. - - , US hero" , "actor" , "Sheltered accommodation" , "Confederate general" .)

I've seen this clue in the Evening Standard.

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