crumblev. t.[Dim. of crumb, v. t., akin to D. kruimelen G. krmeln.] To break into small pieces; to cause to fall in pieces.()He with his bare wand can unthread thy joints,
And crumble all thy sinews. (Milton.)v. i. To fall into small pieces; to break or part into small fragments; hence, to fall to decay or ruin; to become disintegrated; to perish.()If the stone is brittle, it will crumble and pass into the form of gravel. (Arbuthnot.)The league deprived of its principal supports must soon crumble to pieces. (Prescott.)