Elm or maple (4)
I believe the answer is:
tree
I believe this is a double definition.
'elm' is the first definition.
(I've seen this in another clue)
'maple' is the second definition.
(maple is a type of tree)
(Other definitions for tree that I've seen before include "''I think that I shall never see / A poem lovely as a ...'' (Kilmer)" , "Source of wood" , "Ash, chestnut, or araucaria, for example" , "famous actor" , "Woody growth" .)