Akademik

keep one's eyes open

verb

pay attention; be watchful

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Keep your eyes peeled for any policemen

• Syn: ↑keep one's eyes peeled, ↑keep one's eyes skinned

• Usage Domain: ↑colloquialism

• Hypernyms: ↑watch, ↑look out, ↑watch out

• Verb Frames:

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Somebody ——s

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Somebody ——s PP

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phrasal or keep one's eyes peeled also keep one's eyes skinned

: to be on the alert : be watchful : be careful

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keep one's eyes open (or peeled or Brit. skinned)

be on the alert; watch carefully or vigilantly for something

visitors should keep their eyes peeled for lions

Useful english dictionary. 2012.