noun The ability or condition of shining with reflected light; sheen, gleam, gloss, sparkle, shine, etc.
metallic luster
noun The way in which the surface of any particular type of mineral reflects light differently from other minerals, which is helpful in telling minerals apart.
noun Shining light from within, luminosity, brightness, shine.
the sun’s luster
noun Shining beauty, splendor, attractiveness or attraction.
After so many years in the same field, the job had lost its luster.
noun Shining fame, renown, glory.
After the scandal, the idol lost his luster and could only get work in Vegas.
noun Polish, social refinement.
Sure, the posh git spoke with fine lustre. ’S all a load of bollocks, though, innit?
noun A thing exhibiting luster, particularly Any shining body or thing. A piece of glass added to a light (especially a chandelier) to increase its luster. An ornamental light providing luster, especially a chandelier. A substance that imparts luster to a surface, such as polish, gloss, plumbago, glaze, etc. The layer of an object that imparts luster, chiefly with regard to ceramics. Clipping of lusterware: highly lustrous ceramics. A kind of lustrous fabric with a wool weft and cotton, linen, or silk warp, chiefly used for women's dresses. A glory, an act or thing that imparts fame or renown.