Peep v. i. [imp. & p. p. Peeped p. pr. & vb. n. Peeping.]
1. To cry, as a chicken hatching or newly hatched; to chirp; to cheep.
There was none that moved the wing, or opened the mouth, or peeped. --Is. x. 14.
2. To begin to appear; to look forth from concealment; to make the first appearance; as, the sun peeped over the eastern hills.
When flowers first peeped, and trees did blossoms bear. --Dryden.
3. To look cautiously or slyly; to peer, as through a crevice; to pry.
Peep through the blanket of the dark. --Shak.
From her cabined loophole peep. --Milton.
Peep sight, an adjustable piece, pierced with a small hole to peep through in aiming, attached to a rifle or other firearm near the breech.