keep eye out

keep (one's) eye(s) out (for something or someone)

To remain vigilant or carefully watchful (for something or someone). They should be arriving any minute, so keep your eyes out. Keep your eye out for a gift we could give your mother. Tell the team to keep their eyes out for the health inspector. I heard he'll be doing a surprise inspection soon.
See also: keep, out, something
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

keep one's eye(s) out

(for someone or something) Go to keep an eye out (for someone or something).
See also: eye, keep, out
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
See also: