- to make a characteristic short, sharp sound, as small birds and certain insects.
- to make any similar sound: The children chirped with amusement.
- to sound or utter in a chirping manner: The little girl chirped her joy.
- a chirping sound.
- (esp of some birds and insects) to make a short high-pitched sound
- to speak in a lively fashion
- a chirping sound, esp that made by a bird
- Confidential Human Incidents Reporting Programme: a system, run by the RAF Institute of Medicine, by which commercial pilots can comment on safety trends without the knowledge of their employers
