Perhaps wife needs support after blowing top (6)
I believe the answer is:
spouse
'perhaps wife' is the definition.
'support after blowing top' is the wordplay.
'support' becomes 'espouse' (I've seen this before).
'after blowing top' means to remove the first letter.
'espouse' with its first letter taken away is 'SPOUSE'.
'needs' acts as a link.
(Other definitions for spouse that I've seen before include "Possibly wife" , "Consort" , "Elizabethan dance" , "old lady?" , "Married partner" .)