chirp /tʃɜːp $ tʃɜːrp/ BrE AmE ( also chirrup British English ) verb
[ Date: 1400-1500 ; Origin: From the sound ]
1 . [intransitive] if a bird or insect chirps, it makes short high sounds
2 . [intransitive and transitive] to speak in a happy high voice:
‘Yes, all finished,’ he chirped.
—chirp noun [countable]