°The fine particles to which any dry substance is reduced by pounding, grinding, or triturating, or into which it falls by decay; dust.
"Grind their bones to powder small. —Shakespeare"
°An explosive mixture used in gunnery, blasting, etc.;
gunpowder.
verb
°To reduce to fine particles; to pound, grind, or rub into a powder; to comminute; to pulverize; to triturate.
°To sprinkle with powder, or as with powder; to be sprinkle.