Definitions for "Peep sight"
Keywords:  sight, aperture, rear, bow, gunsight
An adjustable piece, pierced with a small hole to peep through in aiming, attached to a rifle or other firearm near the breech; -- distinguished from an open sight.
An item that is placed on string that you look through to aid in shot consistency and to make it easier to use sights.
See Sight, Peep.