\Coom\, n. [Cf. G. kahm mold gathered on liquids, D. kam,
Sw. kimr["o]k pine soot, smoke black, Icel. k[=a]m grime,
film of dirt.]
Soot; coal dust; refuse matter, as the dirty grease which
comes from axle boxes, or the refuse at the mouth of an oven.
--Phillips. Bailey.