Some support I constructed for covered entrance (7)
I believe the answer is:
portico
'covered entrance' is the definition.
(I've seen this before)
'some support i constructed' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'PORTICO' is hidden in the letters of 'support i constructed'.
'for' is the link.
(Other definitions for portico that I've seen before include "Posh covered entrance to building" , "gallery, perhaps" , "Colonnade, covered porch" , "Roofed porch" , "Classical porch" .)