dross
/drɒs/noun
mass noun
1- something regarded as worthless; rubbish废物, 垃圾：
there are bargains if you have the patience to sift through the dross.
如果你有耐心细心查看一下那些废物的话, 便宜货还是有的。
1.1
- foreign matter, dregs, or mineral waste, in particular scum formed on the surface of molten metal杂质, 渣滓; （尤指）浮渣。
派生词
drossy
adjective词源
Old English drōs （in the sense 'scum on molten metal'）; related to Dutch droesem and German Drusen 'dregs, lees'.