Attack family about son and hide (8)
I believe the answer is:
goatskin
'hide' is the definition.
(goatskin is a kind of hide)
'attack family about son' is the wordplay.
'attack' becomes 'goat' (go at).
'family' becomes 'kin' (synonyms).
'about' is a charade indicator (letters next to each other).
'son' becomes 's' (genealogical abbreviation for son).
'kin' after 's' is 'skin'.
'goat'+'skin'='GOATSKIN'
'and' acts as a link.
(Other definitions for goatskin that I've seen before include "Type of leather - a song kit (anag)" , "Leather - wine holder of old" , "Billy's hide?" , "Leather from nanny or billy?" , "Hide Billy or Nanny" .)