witness mark
n.— «A man in life’s goodly prime,/Whose visage was dark with the witness mark/Of service in Southern clime.» —“The Sergeant of the Line” by M.A. Cuming The Drummer Boy , 1907. (source: Double-Tongued Dictionary)
Further reading
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Cat hair may be something you brush off, but cat hair is also a slang term that means “money.” In the same way, cat beer isn’t alcoholic — some people use cat beer as a joking term for “milk.” And imagine walking on a...