01 n. A local name for the igneous rocks of Derbyshire, England; -- said by some to be derived from the German todter stein, meaning dead stone, …
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1.
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.(Min.)
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2.
Bufonite, formerly regarded as a precious stone, and worn as a jewel. See Bufonite. See: Bufonite