To fall apart; to disintegrate.
To break into crumbs.
To mix (ingredients such as flour and butter) in such a way as to form crumbs.
A dessert of British origin containing stewed fruit topped with a crumbly mixture of fat, flour, and sugar.
To vanish by dispersion.
To drive away, disperse.
To use up or waste; squander.
To cause energy to be lost through its conversion to heat.