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.
gray + stone (Wiktionary)