crown glass

noun

Definition of crown glass

1 :a glass blown and whirled into the form of a disk with a center lump left by the worker's rod
2 :alkali-lime silicate optical glass having relatively low refractive index and low dispersion value

First Known Use of crown glass

1694


Learn More about crown glass


Seen and Heard

What made you want to look up crown glass? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

a strongly worded attack

Get Word of the Day daily email!

Test Your Vocabulary

Merriam-Webster's New Words Quiz—Fall 2017 Edition!

  • young-plant-shoots
  • Which of the following is a new sense of the word bunny?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!