Look
Definition 1 of 5
Pro Tip 1/3
Eye Direction
Refers specifically to the movement of the eyes, not the head or body. When I say 'look here,' just move your eyes.
Pro Tip 2/3
Focus Attention
Used when asking for someone to pay attention to something specific. Look at the board for the instructions.
Pro Tip 3/3
Non-verbal Cue
Can convey interest or lack thereof depending on where someone is looking. He wouldn't look at me while I was talking.