noun, masculine

cabochon

/ka.bɔ.ʃɔ̃/

noun, masculine/ka.bɔ.ʃɔ̃/plural: cabochons

cabochon; cul-de-lampe; Small nail with an ornamental head, especially used in furniture; head; silly, unintelligent, clumsy

From caboche + -on, literally “small head”.