Warm, feathery layer for barbarian (7)

I believe the answer is:

heathen

'for barbarian' is the definition.
(thesaurus)

'warm feathery layer' is the wordplay.
'warm' becomes 'heat'.
'feathery layer' becomes 'hen' (feathered bird which lays eggs).
'heat'+'hen'='HEATHEN'

(Other definitions for heathen that I've seen before include "Non-believer" , "Infidel, pagan" , "Barbaric" , "Godless person" , "One who doesn't acknowledge your god" .)

I've seen this clue in The Sun and The Independent.

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