CHIRRUP
chirrup, twitter
(noun) a series of chirps
peep, cheep, chirp, chirrup
(verb) make high-pitched sounds; “the birds were chirping in the bushes”
Source: WordNet® 3.1
Etymology
Verb
chirrup (third-person singular simple present chirrups, present participle chirruping, simple past and past participle chirruped)
(intransitive) To make a series of chirps, clicks or clucks.
(transitive) To express by chirping.
(transitive) To quicken or animate by chirping.
Noun
chirrup (plural chirrups)
A series of chirps, clicks or clucks.
Source: Wiktionary
Chir"rup, v. t. [imp. & p. p. Chirruped; p. pr. & vb. n. Chirruping.]
Etym: [See Chirp.]
Definition: To quicken or animate by chirping; to cherup.
Chir"rup, v. i.
Definition: To chirp. Tennyson.
The criket chirrups on the hearth. Goldsmith.
Chir"rup, n.
Definition: The act of chirping; a chirp.
The sparrows' chirrup on the roof. Tennyson.
Source: Webster’s Unabridged Dictionary 1913 Edition