CHEEP
cheep, peep
(noun) the short weak cry of a young bird
peep, cheep, chirp, chirrup
(verb) make high-pitched sounds; “the birds were chirping in the bushes”
Source: WordNet® 3.1
Etymology
Onomatopoeic.
Verb
cheep (third-person singular simple present cheeps, present participle cheeping, simple past and past participle cheeped)
Of a small bird, to make short, high-pitched sounds sounding like "cheep".
To express in a chirping tone.
Noun
cheep (plural cheeps)
A short, high-pitched sound made by a small bird.
Interjection
cheep
The short, high-pitched sound made by a small bird.
Source: Wiktionary
Cheep, v. i. [imp. & p. p. Cheeped.] Etym: [Cf. Chirp].
Definition: To chirp, as a young bird.
Cheep, v. t.
Definition: To give expression to in a chirping tone.
Cheep and twitter twenty million loves. Tennyson.
Cheep, n.
Definition: A chirp, peep, or squeak, as of a young bird or mousse.
Source: Webster’s Unabridged Dictionary 1913 Edition