dirt, lint, soil, sand, particles, flakes, granules, loess, ashes, cinders, grime, soot, grit, filings, sawdust; devil's snow*, house moss*, Mormon rain*; see also earth 2, filth, powder.
bite the dust<strong>*
lick the dust
make the dust fly
move swiftly, work hard, be active or energetic; see act 1, hurry 1, move 1.