Toad"stone` (?), n. 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.

Toad"stone` (?), n. 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.