[lus.ter] or lus.tre n [ME lustre, fr. L lustrum] (14c): a period of five years: lustrum
2.
[2]luster or lustre n [MF lustre, fr. OIt lustro, fr. lustrare to brighten, fr. L, to purify ceremonially, fr. lustrum] (ca. 1522) 1: a glow of reflected light: sheen; specif: the appearance of the surface of a mineral dependent upon its reflecting qualities
2. a: a glow of light from within: luminosity b: an inner beauty: radiance
3: a superficial attractiveness or appearance of excellence
4. a: a glass pendant used esp. to ornament a candlestick or chandelier b: a decorative object (as a chandelier) hung with glass pendants
5. chiefly Brit: a fabric with cotton warp and a filling of wool, mohair, or alpaca
6: lusterware -- lus.ter.less adj [3]luster or lustre vb lus.tered or lus.tred ; lus.ter.ing or lus.tring vi (1582): to have luster: gleam ~ vt 1: to give luster or distinction to
2: to coat or treat with a substance that imparts luster