from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A transparent or semitransparent brown or gray to nearly black variety of quartz, used as a gemstone. Also called cairngorm.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A brown to black variety of quartz.
from the GNU version of the Collaborative International Dictionary of English
- adj. a variety of quartz crystal of a pale to dark smoky-brown color. See Quartz.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a smoky yellow or brown quartz
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