eyehole

From eye +‎ hole.

eyehole (plural eyeholes)

1. The hole to which the viewer places his or her eye in a device such as a telescope.

   Holonym: eyepiece

2. The hole in a helmet, skull, etc. corresponding to the position of the eye.

   Hyponym: eye socket

   • 1997, Placebo (lyrics and music), “Nancy Boy”:

     Eyeholes in a paper bag
     Greatest lay I ever had

• eyebolt, eyelet
• peephole, knothole