To make a sharp, whirring sound; to chirp shrilly or to squirt liquid forcefully.
From Middle English, possibly a variant or blend of chirp and shirt (meaning to squirt). The exact origin is uncertain, but it appears to be imitative, representing sharp sounds or sudden liquid movements.
Chirt is a dialectal and archaic word that shows how regional speech preserves sounds that standard English abandoned—it's like a linguistic fossil from English countryside dialects!
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