Twins perhaps cut, we hear? (4)
I believe the answer is:
pair
'twins' is the definition.
(I've seen this before)
'cut we hear?' is the wordplay.
'cut' becomes 'pare' (paring is a kind of cutting).
'we hear?' shows a homophone (sound like).
'pare' sounds like 'PAIR'.
'perhaps' is the link.
(Other definitions for pair that I've seen before include "how braces come" , "Brace, couple" , "Husband and wife" , "flight of stairs" , "Two of a similar type" .)