<p><strong>Noun</strong></p><ul><li>The state or quality of shining by reflecting light; glitter, sparkle, sheen, or gloss: the luster of satin.</li><li>Antonyms: dullness.</li><li>A substance, as a coating or polish, used to impart sheen or gloss.</li><li>Radiant or luminous brightness; brilliance; radiance.</li><li>Radiance of beauty, excellence, merit, distinction, or glory: achievements that add luster to one's name.</li><li>A shining object, especially one used for decoration, as a cut-glass pendant or ornament.</li><li>A chandelier, candleholder, etc., ornamented with cut-glass pendants.</li><li>Any natural or synthetic fabric with a lustrous finish. Also called metallic luster.</li><li>An iridescent metallic film produced on the surface of a ceramic glaze.</li><li>Mineralogy: the nature of a mineral surface with respect to its reflective qualities: greasy luster.</li></ul><p><strong>Verb</strong></p><ul><li>(Used with object) To finish (fur, cloth, pottery, etc.) with a luster or gloss.</li><li>(Used without object) To be or become lustrous.</li></ul>