toadstone Meaning, Definition & Usage

Toad"stone` noun
Definitions
  1. (Min.) A local name for the igneous rocks of Derbyshire, England; -- said by some to be derived from the German todter stein, meaning dead stone, that is, stone which contains no ores.
  2. Bufonite, formerly regarded as a precious stone, and worn as a jewel. See Bufonite.

Webster 1913