Woodworker's tool found in tree (5)
I believe the answer is:
plane
I believe this is a double definition.
'woodworker's tool' is the first definition.
(I've seen this before)
'tree' is the second definition.
(plane is a type of tree)
'found in' acts as a link.
(Other definitions for plane that I've seen before include "Nepal (anag.)" , "What imitates bird" , "Woodworking tool" , "Flat surface; tree" , "Tool for smoothing wood" .)