blue John (English, noun)
expansion: blue John (uncountable)
Senses:
topics: beverages
brewing
business
food
lifestyle
manufacturing
glosses: Afterwort, partially fermented wort.
tags: obsolete
uncountable
glosses: A semiprecious mineral mined in Derbyshire, a form of fluorite with bands of a purple-blue or yellowish colour.
tags: uncountable
glosses: Skimmed milk.
tags: US
regional
uncountable
Forms:
form: bluejohn
tags: alternative
form: blue john
tags: alternative
form: blue-john
tags: alternative
form: blue-John
tags: alternative
form: Blue John
tags: alternative