|1.||to break or be broken into crumbs or fragments|
|2.||(intr) to fall apart or away: his resolution crumbled|
|3.||(Brit) a baked pudding consisting of a crumbly mixture of flour, fat, and sugar over stewed fruit: apple crumble|
|[C16: variant of crimble, of Germanic origin; compare Low German krömeln, Dutch kruimelen]|
see that's how the ball bounces (cookie crumbles).