keep your eyes peeled/skinned

keep your eyes peeled/skinned

Be particularly watchful; remain alert. This American expression dates from the mid-nineteenth century and presumably likens peeled or skinned to being wide open. An early reference in print occurs in J. S. Robb’s Squatter Life (1847): “Keep your eye skinned for Injuns.”
See also: eye, keep, peel, skinned
The Dictionary of Clichés by Christine Ammer
See also:
  • cat got your tongue, has the
  • turn over in one's grave, (enough to make one)
  • bottle up feelings, to
  • way to a man's heart, the
  • past history
  • more power to you/him/them
  • cat that swallowed the canary, (look) like the
  • fighting mad
  • bet one's bottom dollar, one can
  • keep (one's) eye(s) skinned (for someone or something)