dross
US
UK dross n: uncountable (refuse, waste)
SC 渣滓, 浮渣
dross n: (residue on metal) (金属)
SC 浮渣 fú zhā
SC 废料 fú zhā，fèi liào
TC 廢料
TC 廢料
A layer of dross had built up on the zinc.
dross n: figurative, uncountable ([sth] worthless)
SC 废物, 无用之物
This TV show is unwatchable dross!