1
- mass noun stony waste matter separated from metals during the smelting or refining of ore矿渣, 炉渣, 熔渣。
1.1
- similar material produced by a volcano; scoria火山渣。
2
- Brit. informal, derogatory a promiscuous woman〈英, 非正式, 贬〉妓女, 荡妇（性乱交的女子）。
2.1
- a contemptible or insignificant person卑鄙小人; 无足轻重的人。
verb
slagged, slagging
1
- no obj. [usu. as noun slagging] produce deposits of slag成渣。
2
- with obj. Brit. informal criticize (someone) in an abusive and insulting manner〈英, 非正式〉辱骂; 侮辱（某人）：
we used to hate each other and slag each other off.
我们过去相互憎恨, 经常相互辱骂。
派生词
slaggy
adjective （slaggier, slaggiest）词源
mid 16th cent.: from Middle Low German slagge, perhaps from slagen 'strike', with reference to fragments formed by hammering. The verb sense 'criticize' dates from the 1970s.