peep2

noun

• 1a feeble, high-pitched sound made by a young bird or mammal.
• [with negative] a slight sound, utterance, or complaint:not a peep out of them since shortly after eight
• a brief, high-pitched electronic sound:the phone gives three sharp peeps

• 2North American informal a small sandpiper or similar wading bird: the peeps have returned to Fundy

verb

• make a brief, high-pitched sound: Don peeped on his whistle