follow Dictionary.com

Is irregardless a word?

crown glass

noun
1.
an optical glass of low dispersion and generally low index of refraction.
2.
an old form of window glass formed by blowing a globe and whirling it into a disk.
Origin of crown glass
1700-1710
1700-10
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the Web for crown glass
Historical Examples
British Dictionary definitions for crown glass

crown glass

noun
1.
another name for optical crown
2.
an old form of window glass made by blowing a globe and spinning it until it formed a flat disc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source

Word of the Day

Difficulty index for crown glass

Few English speakers likely know this word

Word Value for crown

10
12
Scrabble Words With Friends