DICT.TW Dictionary Taiwan
Scum, v. t. [imp. & p. p. Scummed p. pr. & vb. n. Scumming ]
1. To take the scum from; to clear off the impure matter from the surface of; to skim.
You that scum the molten lead. --Dryden & Lee.
2. To sweep or range over the surface of. [Obs.]
Wandering up and down without certain seat, they lived by scumming those seas and shores as pirates. --Milton.
scum
n 1: worthless people [syn: trash]
2: a film of impurities or vegetation that can form on the
surface of a liquid
[also: scumming, scummed]