Meaning of bride's biscuit in English:

bride's biscuit

noun

US
  • 1A small, round cake made by a bride; used in similes with reference to something that is heavy, hard, dry, flat, or unpalatable.

  • 2A type of small, round cake which is easy to make and in which both yeast and baking powder are used as raising agents.

Origin

Late 19th century.