Roguish manner to make an entrance (7)
I believe the answer is:
archway
'an entrance' is the definition.
(archway is a kind of entrance)
'roguish manner' is the wordplay.
'roguish' becomes 'arch' (I've seen this before).
'manner' becomes 'way' ('way' can be a synonym of 'manner').
'arch'+'way'='ARCHWAY'
'to make' is the link.
(Other definitions for archway that I've seen before include "Vaulted entrance; London tube station" , "part of London" , "Entrance structure" , "Curved entrance" , "entrance, perhaps" .)