| Webster's Online Dictionary |
| Expressions | Domain | Definition | |
| Blue John | Industry | A fibrous variety of fluorite used esp. for vases (Webster). Source: European Union. (references) | |
| Blue John | Literature | (A). A petrefaction of blue fluor-spar, found in the Blue John mine of Tre Cliff, Derbyshire; and so called to distinguish it from the Black Jack, an ore of zinc. Called John from John Kirk, a miner, who first noticed it. Source: Brewer's Dictionary. | |
Source: compiled by the editor from various references; see credits. | Top | ||
Topics by Level of Interest: BLUE JOHN | ||||
| Topics sorted by level of Interest | Level (1=low, 600=high) | Topics sorted Alphabetically | Level (1=low, 600=high) | |
| The Terror of Blue John Gap | 13 | Blue John Cavern | 12 | |
| Blue John Cavern | 12 | The Terror of Blue John Gap | 13 | |
Source: the editor, created by/for EVE to gauge likely levels of human interest in linguistically triggered topics (compiled across various sources, such as Wikipedia and specialty expression glosses). | ||||
