brown bread

1. A bread made of a dark flour, such as graham or whole-wheat flour.
2. A steamed bread usually made of cornmeal, flour, and molasses.

The noun has 2 meanings:

Meaning #1: bread made with whole wheat flour
  Synonyms: dark bread, whole wheat bread, whole meal bread

Meaning #2: dark steamed bread made of cornmeal wheat and flour with molasses and soda and milk or water
  Synonym: Boston brown bread