from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Any of various light-resistant and heat-resistant, semitransparent blue pigments of powerful tinctorial strength, used chiefly in permanent industrial finishes, printing inks, and artists' colors.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun slightly purplish or bluish dark grey
- noun any of various blue pigments
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