Main Entry: lus·trous

Pronunciation: \ˈləs-trəs\

Function: adjective

Date: 1601

1 : reflecting light evenly and efficiently without glitter or sparkle <a lustrous satin> <the lustrous glow of an opal>
2 : radiant in character or reputation : illustrious

synonyms see bright

— lus·trous·ly adverb

— lus·trous·ness noun