- (especially British English)
something of very low quality; the least valuable part of something 劣質品；糟粕 mass-produced dross 成批生産的劣質品 The well-written dialogue separates this film from the usual teenage dross. 精心撰寫的對話將這部電影與一般的劣質青春片區分開來。 He considered the working class to be the dross of society. 他認爲工人階級是社會的渣滓。
- (specialist)
a waste substance, especially that separated from a metal when it is melted 廢料；（尤指金屬熔化的）浮渣 The fire burns away the dross leaving the pure metal. 火燒掉了渣滓，留下了純金屬。
Word OriginOld English drōs (in the sense ‘scum on molten metal’); related to Dutch droesem and German Drusen ‘dregs, lees’.