Sagittarius? (6)
I believe the answer is:
archer
'sagittarius?' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for archer that I've seen before include "Tell perhaps" , "Tell possibly < more mischievous" , "Her car is targeted by one with a bow and arrow" , "His weapon is the bow" , "A 19 lord - old soldier" .)