blue-john definition

  • noun:
    • A name directed at fluor spar in Derbyshire, in which its useful for ornamental reasons.
    • your local name in Derbyshire, England, of a blue variety of fluorspar.

Related Sources

  • Definition for "blue-john"
    • A name directed at fluor spar in Derbyshire,…
    • View More
  • Sentence for "blue-john"
    • I’d never heard of blue-john milk…
    • View More
41 votes

How would you define blue-john?

All the definitions on AZdictionary were written by people just like you. Now's your chance to add your own!