whetstone
From Proto-Italic *kōtis, from Proto-Indo-European *ḱeh₃- (“to sharpen”). Cognate with Latin catus (“clever, cunning”), cautēs (“pointed rock”), cuneus (“wedge”) and Ancient Greek κῶνος (kônos, “cone”).
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Practica a expresión oral e a memorización de " cos " e moitas outras palabras e frases latín .