Manage to capture small wood (5)
I believe the answer is:
copse
'wood' is the definition.
(a copse is a small wood)
'manage to capture small' is the wordplay.
'manage' becomes 'cope' (manage can mean to cope or do well).
'to capture' is an insertion indicator.
'small' becomes 's' (abbreviation - e.g. clothes size).
'cope' going around 's' is 'COPSE'.
(Other definitions for copse that I've seen before include "Piece of managed woodland" , "Wood - thicket" , "Stand of trees" , "A little wood" , "Harvested woodland" .)