noun
Meaning 1
A yellow or smoky brown variety of rock crystal, found especially in the mountains of Cairngorm in Scotland.
Definition source: English Wiktionary via Wiktextract
Usage: rare, uncountable
Topics: chemistry, geography, geology, mineralogy, natural-sciences, physical-sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided