Pine family tree (3)
I believe the answer is:
fir
'pine family tree' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for fir that I've seen before include "Evergreen tree for Irish men?" , "Conifer tree" , "Evergreen tree for Gaelic men" , "Kind of cone-bearing tree" , "Tree with cones" .)