Close a construction for comfort (6)
I believe the answer is:
solace
'comfort' is the definition.
(solace is a kind of comfort)
'close a construction' is the wordplay.
'construction' indicates anagramming the letters (answer constructed from certain letters).
'close'+'a'='closea'
'closea' anagrammed gives 'SOLACE'.
'for' is the link.
(Other definitions for solace that I've seen before include "Comfort in time of disappointment or sorrow" , "Something that comforts distress" , "Comfort in misery" , "Comfort at a time of sadness" , "Comfort and reassurance" .)