slate black
(redirected from mineral black)Also found in: Encyclopedia.
Related to mineral black: Mineral blue
slate black
n.
A purplish black.
slate′-black′ adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.