Tree seen if turning to the right (3)
I believe the answer is:
fir
'tree' is the definition.
(fir is a kind of tree)
'if turning to the right' is the wordplay.
'turning to' is an anagram indicator (the letters can turn into other words).
'the right' becomes 'r' (common abbreviation).
'if' is an anagram of 'fi'.
'fi'+'r'='FIR'
'seen' is the link.
(Other definitions for fir that I've seen before include "Kind of cone-bearing tree" , "wood" , "Evergreen tree for Gaelic men" , "Evergreen tree for Irish men?" , "Evergreen conifer" .)