Second person reported a tree (3)
I believe the answer is:
yew
'a tree' is the definition.
(yew is a kind of tree)
'second person reported' is the wordplay.
'second person' becomes 'you' (I've seen this before).
'reported' shows a homophone (sound like).
'you' sounds like 'YEW'.
(Other definitions for yew that I've seen before include "This tree grows in churchyard" , "Wood for archers" , "Wood for bows" , "feature of many graveyards" , "Conifer" .)