scum

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

1. worthless people
• Syn:
trash
• Hypernyms:
rabble, riffraff, ragtag, ragtag and bobtail
2. a film of impurities or vegetation that can form on the surface of a liquid
• Derivationally related forms:
scummy
• Hypernyms:
film
• Hyponyms:
slag, scoria, dross

II - verb

remove the scum from
• Hypernyms:
get rid of, remove
• Verb Frames:
- Somebody ----s something