Aim for goal (6)
I believe the answer is:
object
I believe this clue is a double definition.
'aim' is the first definition.
('object' can be a synonym of 'aim')
'goal' is the second definition.
(object is a kind of goal)
'for' acts as a link.
(Other definitions for object that I've seen before include "Argue against - purpose" , "Idea" , "Sporting description of ball" , "oppose" , "part of sentence" .)