Cologne earth
Appearance
English
[edit]Etymology
[edit]Named after the city.
Noun
[edit]- (mineralogy) An earth of a deep brown colour, containing more vegetable than mineral matter; an earthy variety of lignite, or brown coal.
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
(See the entry for “Cologne earth”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.)