Clothing, black fancy trousers mad husband puts on (7,6)
I believe the answer is:
bermuda shorts
'clothing' is the definition.
(Bermuda shorts is an example)
'black fancy trousers mad husband puts on' is the wordplay.
'black' becomes 'b' (abbreviation as in pencil hardness).
'fancy' indicates an anagram.
'husband' becomes 'h' (abbreviation).
'puts on' means one lot of letters go next to another (in a down clue, some letters go on top of others).
'trousers'+'mad'+'h'='trousersmadh'
'trousersmadh' anagrammed gives 'ermudashorts'.
'b'+'ermudashorts'='BERMUDA SHORTS'
(Other definitions for bermuda shorts that I've seen before include "Knee-length garment" , "Formal trousers reaching almost to the knee" , "Casual garment" , "Trousers that end at the knees" , "beachwear" .)