One bent on being a toxophilite (6)
I believe the answer is:
archer
This could be a double definition.
'one bent on being' is the first definition.
'archer' can be an answer for 'being' (archer is a kind of being). I'm not certain of the 'one bent on' bit.
'a toxophilite' is the second definition.
(I've seen this before)
Can you help me to learn more?
(Other definitions for archer that I've seen before include "Irish parliament" , "His sport is the bow and arrow" , "launcher of projectile" , "Bowman - popular author" , "A 19 lord - old soldier" .)