Asset in darts (3)
I believe the answer is:
aim
'asset in darts' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for aim that I've seen before include "Point (gun); intention" , "Point towards a target, or have ambition" , "Goal, objective" , "Draw a bead on" , "This is mean" .)