What does the word butter mean?

Usage examples for butter

  1. You ordered that thick bread and butter for three, did you?" – Dickens As an Educator by James L. (James Laughlin) Hughes
  2. Have you sold any butter? – Growth of the Soil by Knut Hamsun
  3. Bread and butter is a great thing; but I would have it of the best if that be possible. – Orley Farm by Anthony Trollope