Father returns with pearl reset for dress (7)
I believe the answer is:
apparel
'for dress' is the definition.
(synonyms)
'father returns with pearl reset' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'returns' says the letters should be written in reverse.
'with' says to put letters next to each other.
'reset' indicates anagramming the letters.
'pa' reversed gives 'ap'.
'pearl' is an anagram of 'parel'.
'ap'+'parel'='APPAREL'
(Other definitions for apparel that I've seen before include "Real pap (anag) - clothing" , "what's in the press?" , "Garb, clothes" , "Pod of peas" , "Clothing, things to wear" .)