Dictionary definition · peep
noun
- the short weak cry of a young bird
- a secret look
verb
- look furtively"He peeped at the woman through the window"
- cause to come into view"he peeped his head through the window"
- make high-pitched sounds"the birds were chirping in the bushes"
- speak in a hesitant and high-pitched tone of voice
- appear as though from hiding"the new moon peeped through the tree tops"
Source: Open English WordNet (CC BY 4.0).