Crumb /(krŭm)/

Crumb

n.
  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. Fig.: A little; a bit; as, a crumb of comfort.
  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.

Phrases & Compounds
Crumb brush
a brush for sweeping crumbs from a table.
To a crum
with great exactness; completely.

Crumb

v. t.

imp. & p. p. Crumbed; p. pr. & vb. n. Crumbing

  1. To break into crumbs or small pieces with the fingers; as, to crumb bread.