dustball

Etymology

From dust + ball.

dustball means A ball of dust. Lexicurio rates it Sui generis — a strength score of 89 out of 100.

noun

A ball of dust.
A ball of grain-dust formed in the intestine of a diseased horse.“Long residence in lime districts had furnished the experience, that phosphatic calculi are not even as common as among the horses and ponies of coal-mines; and, further, that both phosphatic calculi, and more generally mixed or the dustball kind, are very prevalent in those pits, and even districts above ground, where no lime-water whatever can be obtained.”