luster (n.1)youdaoicibaDictYouDict[luster 词源字典]
"gloss, radiance," 1520s, from Middle French lustre "gloss, radiance" (14c.), common Romanic (cognates: Spanish and Portuguese lustre, Rumanian lustru, Italian lustro "splendor, brilliancy"), from Latin lustrare "spread light over, brighten, illumine," related to lucere "shine," lux "light" (see light (n.)).[luster etymology, luster origin, 英语词源]
luster (n.2)youdaoicibaDictYouDict
"one who lusts," 1590s, agent noun from lust (v.).