an optical glass of low dispersion and generally low index of refraction.
an old form of window glass formed by blowing a globe and whirling it into a disk.
Origin of crown glass
First recorded in 1700–10
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for crown glass
Historical Examples of crown glass
Their materials are those used in the crown-glass manufacture.
Crown-glass was easy to work, but flaked off in rather short pieces.
English crown-glass; excellent quality, but not so white as the last.
Such a mixture will produce a dull metal, very attractive of moisture: defects to which the French crown-glass also is subject.
British Dictionary definitions for crown glass
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
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