chirrup n 1: a series of chirps [syn: {chirrup}, {twitter}] v 1: make high-pitched sounds; "the birds were chirping in the bushes" [syn: {peep}, {cheep}, {chirp}, {chirrup}]
Chirrup \Chir"rup\, v. t. [imp. & p. p. {Chirruped}; p. pr. & vb. n. {Chirruping}.] [See {Chirp}.] To quicken or animate by chirping; to cherup. [1913 Webster]
Chirrup \Chir"rup\, v. i. To chirp. --Tennyson. [1913 Webster] The criket chirrups on the hearth. --Goldsmith. [1913 Webster]
Chirrup \Chir"rup\, n. The act of chirping; a chirp. [1913 Webster] The sparrows' chirrup on the roof. --Tennyson. [1913 Webster]