from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Alternative form of peperino.

from the GNU version of the Collaborative International Dictionary of English

  • n. A volcanic rock, formed by the cementing together of sand, scoria, cinders, etc.

from The Century Dictionary and Cyclopedia

  • n. A volcanic tufa composed of well-developed crystals or crystal fragments cemented together. The name was first given to the tufas of the Alban Mount, near Rome.


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