keep one's eyes peeled

keep one's eyes peeled or keep one's eyes skinned  {v. phr.},  {informal}
To watch carefully; be always looking.
The bird-watcher kept his eyes peeled for bluebirds.
When the boys walked through the roads, they kept their eyes skinned for snakes.
Compare: EYES OPEN (1), EYE OUT.
Categories: informal verb

'keep one's eyes peeled' on video