Aim; tip (5)
I believe the answer is:
point
I believe this is a double definition.
'aim' is the first definition.
(pointing is a kind of aiming)
'tip' is the second definition.
(synonyms)
(Other definitions for point that I've seen before include "Indicate digitally" , "how to repair masonry" , "Repair brickwork" , "Crux" , "Importance < of level" .)