Aim, goal (6)
I believe the answer is:
target
This clue is a double definition.
'aim' is the first definition.
(both can mean a goal or purpose)
'goal' is the second definition.
(I know that target is a type of goal)
(Other definitions for target that I've seen before include "Aim, objective" , "Point to be aimed at" , "Object to be attained by archers (or fund raisers?)" , "Fixed goal" , "desired objective" .)