Leave out in the cold with hairy beard (5)

I believe the answer is:

debar

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

'leave out' is the definition.
(thesaurus)

'the cold with hairy beard' is the wordplay.
'beard' can be anagrammed to 'DEBAR'.
Though, I am not clear how this is indicated.

'in' is the link.

Can you help me to learn more?

(Other definitions for debar that I've seen before include "Prohibit (from doing something)" , "Keep out" , "Block" , "Large advert" , "Exclude (from right)" .)

I've seen this clue in the Irish Times (Crosaire) and the Irish Times.

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