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Classic usage
Estimated CEFR level: C2 — Proficiency
Estimated from word frequency; not an official CEFR classification.
From Spanish castañeta, diminutive form of castaña, from Latin castanea, from Ancient Greek καστάνεια (kastáneia, “chestnut”), possibly of Pre-Greek origin. Related to the chest in chestnut, formerly chesten.
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Classic usage
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