Old soldier she shot with arrow (8)
I believe the answer is:
warhorse
'old soldier' is the definition.
(I've seen this before)
'she shot with arrow' is the wordplay.
'shot with' is an anagram indicator.
'she' anagrammed with 'arrow' can make 'WARHORSE'.
(Other definitions for warhorse that I've seen before include "steed?" , "something too often played" , "Veteran soldier" , "Belligerent" , "Old soldier" .)