Leather from nanny or billy? (8)

I believe the answer is:

goatskin

'leather from nanny or billy?' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for goatskin that I've seen before include "Hide Billy or Nanny" , "Leather - wine holder of old" , "Billy's hide?" , "Type of leather - a song kit (anag)" , "Leather from nanny or billy?" .)

I've seen this clue in The Guardian.

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