chirp

Short definition from Wiktionary

Noun

1. 1
   A short, sharp or high note or noise, as of a bird or insect.
2. 2
   A pulse of signal whose frequency sweeps through a band of frequencies for the duration of the pulse.

Verb

1. 1
   To make a short, sharp, cheerful note, as of small birds or crickets; to chitter; to twitter.
2. 2
   To speak in a high-pitched staccato.
3. 3
   To modify (a pulse of signal) so that it sweeps through a band of frequencies throughout its duration.
4. 4
   To cheer up; to make (someone) happier.
5. 5
   To speak rapid insulting comical banter back and forth; to bicker or argue.
6. 6
   To inform on someone; snitch.