Cut not all of the wood (3)
I believe the answer is:
hew
'cut' is the definition.
(thesaurus)
'not all of the wood' is the wordplay.
'not all of' indicates the answer is hidden within the clue (I've seen 'not all' mean this).
'HEW' is hidden within 'the wood'.
(Other definitions for hew that I've seen before include "Chop or cut with axe" , "Carve out of wood or stone" , "Cut with blows" , "Chop; sounds like colour" , "Chop or hack at" .)