Plural of chucky; informal term for small stones or pebbles, or playful nickname form.
Likely from 'chuck' (to throw) with the diminutive/affectionate suffix '-ie' or '-y,' creating an informal plural for throwable small stones.
The '-ie' suffix turns harsh words cute and friendly—'chucky' for stones, 'doggy' for dog, 'teddy' for bear—and shows how English speakers soften language when talking about things we like!
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