1. Watch, look, see imply being aware of things around one by perceiving them through the eyes. To watch is to be a spectator, to look on or observe, or to fix the attention upon during passage of time: to watch while a procession passes. To look is to direct the gaze with the intention of seeing, to use the eyesight with attention: to look for violets in the spring; to look at articles displayed for sale. To see is to perceive with the eyes, to obtain a visual impression, with or without fixing the attention: animals able to see in the dark.

Did you mean watch over?