Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A type of gray, volcanic rock, typically containing feldspar and iron
  • n. A building made of any type of gray stone, such as limestone

from the GNU version of the Collaborative International Dictionary of English

  • n. A grayish or greenish compact rock, composed of feldspar and augite, and allied to basalt.

from The Century Dictionary and Cyclopedia

  • n. In geology, a grayish or greenish compact volcanic rock, composed of feldspar and augite or horn-blende, and allied to basalt.

Etymologies

gray +‎ stone (Wiktionary)

Examples

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