peep 1 (pēp)
intr.v. peeped, peep·ing, peeps
1. To utter short, soft, high-pitched sounds, like those of a baby bird; cheep.
2. To speak in a hesitant, thin, high-pitched voice.
n.
1. A short, soft, high-pitched sound or utterance, like that of a baby bird.
2. A slight sound or utterance: I don't want to hear a peep out of you.
3. Any of various small North American sandpipers.
[Middle English *pepen, probably alteration of pipen, from Old English pīpian, to pipe, from pīpe, tube, musical instrument, and from Latin pīpāre, to peep; see pipe.]