keep an eye peeled

• keep one's eyes peeled

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keep an eye peeled (third-person singular simple present keeps an eye peeled, present participle keeping an eye peeled, simple past and past participle kept an eye peeled)

1. (idiomatic) To look out (for something) attentively.

   Keep an eye peeled, you never know when the ice-cream truck will pass by.

• be on the lookout
• keep a look-out
• keep an eye out
• keep an eye skinned
• keep one's eyes skinned
• look out
• watch out