A point about wood for burning (5)
I believe the answer is:
afire
'burning' is the definition.
(I've seen this in another clue)
'a point about wood' is the wordplay.
'point' becomes 'E' (compass point).
'about' says to put letters next to each other.
'wood' becomes 'fir' (fir is a kind of wood).
'e' put after 'fir' is 'fire'.
'a'+'fire'='AFIRE'
'for' is the link.
(Other definitions for afire that I've seen before include "lit up" , "Blazing - excited" , "in flames" , "Ablaze" , "Burning" .)