scum

  1. Noun.  (uncountable) A layer of impurities that accumulates at the surface of a liquid (especially molten metal or water).
  2. Noun.  (uncountable) A greenish water vegetation (such as algae), usually found floating on the surface of ponds.
  3. Noun.  The topmost liquid layer of a cesspool or septic tank.
  4. Noun.  (countable) (derogatory, slang) A person or persons considered to be reprehensible.
  5. Verb.  To remove the layer of scum from (a liquid etc.).
  6. Verb.  To remove (something) as scum.
  7. Verb.  (obsolete) To scour (the land, sea etc.).

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This entry was last updated on RefTopia from its source on 3/20/2012.