CRUMB

Crumb (krŭm), n. [[AS. cruma, akin to D. kruim, G. krume; cf. G. krauen to scratch, claw.]] [Written also crum.] 1. 1. A small fragment or piece; especially, a small piece of bread or other food, broken or cut off.
Desiring to be fed with the crumbs which fell from the rich man's table. Luke xvi. 21. 2. 2. Fig.: A little; a bit; as, a crumb of comfort.
3. 3. The soft part of bread.
Dust unto dust, what must be, must; If you can't get crumb, you'd best eat crust. Old Song. Crumb brush, a brush for sweeping crumbs from a table. — To a crum, with great exactness; completely.