Webster's Revised Unabridged Dictionary · 1913

Cheep

Cheep (chēp) , intransitive verb

[Compare Chirp]

To chirp, as a young bird.

Cheep , transitive verb

To give expression to in a chirping tone.
Cheep and twitter twenty million loves. — Tennyson

Cheep , noun

A chirp, peep, or squeak, as of a young bird or mouse.