keep one eye on (someone or something)

(redirected from keep one eye on)

keep one eye on (someone or something)

To focus part of one's attention on someone or something else. I tried to enjoy the movie, but I couldn't help but keep one eye on the clock to make sure we didn't miss our train. I don't mind if your friend comes over, but be sure to keep one eye on your sister while I'm cooking dinner.
See also: eye, keep, on, one