Made a churring or trilling sound; produced the characteristic buzzing sound made by insects or birds.
Past tense of 'chirr,' formed with the standard '-ed' suffix. Since 'chirr' is a regular verb, it follows the typical English pattern for past tense formation.
Regular past tenses like 'chirred' show English's dominant rule: add '-ed' to make the past tense, and this rule is so strong that children even overgeneralize it, saying 'goed' or 'eated'—a clear sign that '-ed' is the default in our minds, even when the actual English past tenses are irregular.
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