Dog daughter kept in Dorset town (6)
I believe the answer is:
poodle
'dog' is the definition.
(poodle is a kind of dog)
'daughter kept in dorset town' is the wordplay.
'daughter' becomes 'd'.
'kept in' means one lot of letters goes inside another.
'dorset town' becomes 'poole' (I've seen this before).
'd' put inside 'poole' is 'POODLE'.
(Other definitions for poodle that I've seen before include "Looped around the dog" , "toady?" , "Dog (seen in a parlour?)" , "Servile person; dog" , "Pet dog with clipped curly hair" .)