Definition of "ground glass" [ground glass]

• Glass that has been ground or etched to create a roughened nontransparent surface. (noun)
• Glass that has been ground into fine particles, as for use as an abrasive. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.