Girl in black perhaps secured husband (4)
I believe the answer is:
goth
'girl in black perhaps' is the definition.
(I've seen this before)
'secured husband' is the wordplay.
'secured' becomes 'got' (I can't justify this - if you can you should give a lot more credence to this answer).
'husband' becomes 'h'.
'got'+'h'='GOTH'
Can you help me to learn more?
(Other definitions for goth that I've seen before include "Uncivilised person" , "Teutonic barbarian" , "Old invader" , "punk style" , "Rocker" .)