Peep (pēp), v. i. [imp. & p. p. Peeped (pēpt); p. pr. & vb. n. Peeping.] [Of imitative origin; cf. OE. pipen, F. piper, pépier, L. pipire, pipare, pipiare, D. & G. piepen. Senses 2 and 3 perhaps come from a transfer of sense from the sound which chickens make upon the first breaking of the shell to the act accompanying it; or perhaps from the influence of peek, or peak. Cf. Pipe.] 1. To cry, as a chicken hatching or newly hatched; to chirp; to cheep.
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There was none that moved the wing, or opened the mouth, or peeped. Is. x. 14.
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2. To begin to appear; to look forth from concealment; to make the first appearance; as, the sun peeped over the eastern hills.
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When flowers first peeped, and trees did blossoms bear. Dryden.
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3. To look cautiously or slyly; to peer, as through a crevice; to pry.
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Peep through the blanket of the dark. Shak.
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From her cabined loophole peep. Milton.
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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.
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