Definition of Scumming

Babylon English Dictionary
remove impurities; remove the foul membrane from the surface of a liquid; form a foul membrane, become covered with a dirty film
Search Dictionary
Scumming Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(p. pr. & vb. n.)
of Scum
  
(n.)
The act of taking off scum.
  
(n.)
That which is scummed off; skimmings; scum; -- used chiefly in the plural.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About