Definition of keep one's eyes open or peeled or British skinned in English:

keep one's eyes open (or peeled or British skinned)

Be on the alert; watch carefully or vigilantly for something: keep your eyes peeled for a phonebox
More example sentences
  • She said: ‘The local community have supported us so well and now we want them to keep their eyes open and to be vigilant.’
  • I'll try to keep my eyes open and watch for them for you, but I don't think they'll come.
  • But you've just got to keep your eyes open and watch out for the other cars.
See parent entry: eye

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