Английский разговорный словарь (основной) - scum

skʌm n. & v. --n. 1 a layer of dirt, froth, or impurities etc. forming at the top of liquid, esp. in boiling or fermentation. 2 (foll. by of) the most worthless part of something. 3 colloq. a worthless person or group. --v. (scummed, scumming) 1 tr. remove scum from; skim. 2 tr. be or form a scum on. 3 intr. (of a liquid) develop scum. øøscummy adj. (scummier, scummiest) adj. [ME f. MLG, MDu. schum, OHG scum f. Gmc]