Meaning

noun a surface coating for ceramics or porcelain

noun a quality that outshines the usual

noun the visual property of something that shines with reflected light

originFrom Latin lustra (“wilds, woods”), thought to derive from unattested *dustrum, from unattested Ancient Greek *δύστρον (*dústron, “place animals wallow”), from δύω (dúō, “to plunge, to wallow”).

Etymology from Wiktionary, CC BY-SA 3.0