Timber, would you say? (4)
I believe the answer is:
wood
'timber' is the definition.
(I've seen this before)
'would you say?' is the wordplay.
'you say?' shows a homophone (sound like).
'would' is a homophone of 'WOOD'.
(Other definitions for wood that I've seen before include "What you might need to play golf" , "Cooing bird" , "Dense growth of trees" , "Grove" , "Small forest; golf club" .)