crumb [-s] n

OE cruma.

  1. Piece; inner part of a loaf, as opposed to the outer part; [metaphor] sacrament morsel; [fig.] word; phrase; line of verse.
  2. Fragment; particle; small piece of food.
  3. Thing; [fig.] price; reciprocal gesture; repayment of kindness.
  4. Stone; chip; fleck; flake; piece of rock; grain of sand.
  5. Scrap; left-over; [fig.] minimal subsistence; insufficient meal; beggar's portion.
  6. Drop; small amount.