CALC-TUFF
A Dictionary of Arts, Manufactures and Mines · 1840 · p. 212
A semi-hard irregular deposit of carbonate of lime, formed from the waters of calcareous springs.
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TUFF
—
Adair's New Encyclopedia (1923)
calc
—
A Concise Anglo-Saxon Dictionary (1916)
Tuff
—
Chamber's Twientieth Century Dictionary (1908)
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