Definitions

from The Century Dictionary.

  • noun Crystallized iron pyrites or pyrite, early used as a gem.
  • noun The clavated fossil spine of a very large egg-shaped echinus.
  • noun The basalt capping the coal-measures on the Titterstone and Brown Clee hills in Shropshire, England; also, the local name of a limestone-bed belonging to the White Lias (Rhætic) in Somersetshire.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Paleon.) A large clavate spine of a fossil sea urchin.

Etymologies

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