To make a series of short, sharp chirping sounds like a bird or insect.
Onomatopoetic word derived from the natural sound itself, related to 'chirp' and 'chirrup,' used since the 16th century to imitate bird calls and similar noises.
This is one of the oldest words in English that literally imitates the sound it describes—linguists call these 'onomatopoeia'—and it's been helping people describe bird songs for over 400 years without needing to ever hear a real bird!
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