noun, masculine/tʁu/plural: trous
hole; blank (memory); pause in conversation
From Early Medieval Latin traugus, a "barbarous" Latin word first attested in the Ripuarian Law, probably related to torus (“round hill”). Thought to be of Celtic, specifically Gaulish, origin. However, others have suggested a borrowing from Ancient Greek τρῦπα (trûpa, “hole”), instead. Related to Catalan and Occitan trauc.