mountain soap

English

Noun

mountain soap (uncountable)

  1. A soft earthy mineral, of a brownish colour, used in crayon painting.(clarification of this definition is needed)

Synonyms

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 The imported definitions may be significantly out of date, and any more recent senses may be completely missing.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 mountain soap under mountain in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913)

References
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