Sound ready for home (4)
I believe the answer is:
sett
'for home' is the definition.
(type of animal dwelling)
'sound ready' is the wordplay.
'sound' indicates a 'sounds like' (homophone) clue.
'ready' becomes 'set' (set can mean ready or prepared).
'set' is a homophone of 'SETT'.
(Other definitions for sett that I've seen before include "paving stone" , "Badger's earth" , "beastly home" , "Test for a badger's burrow" , "Badger's residence" .)