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- keep an eye out
keep an eye out
keep an eye out (for someone or something)
and have an eye out (for someone or something); keep one's eye out (for someone or something); have one's eye out (for someone or something)Fig. to watch for the arrival or appearance of someone or something. Please try to have an eye out for the bus. Keep an eye out for rain. Have your eye out for a raincoat on sale.
keep an eye out (for somebody/something)
also keep your eye out (for somebody/something) to watch carefully for someone or something keep your eyes peeled (for something) Three aircraft kept an eye out for the submarine while waiting for help to arrive. I always kept my eye out for strangers.
Related vocabulary: keep an ear out for somebody/something keep an eye out
To be watchful.