Fit a wood-processing machine? (7)
I believe the answer is:
chipper
I believe this clue is a double definition.
'fit' is the first definition.
(thesaurus)
'a wood-processing machine?' is the second definition.
(machine for turning timber into chips)
(Other definitions for chipper that I've seen before include "Smart" , "Debonair" , "stonemason?" , "full of beans" , "golfer, perhaps?" .)