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Definition of Frankfort black
1. Noun. A black pigment formerly used in copperplate printing, prepared by burning vine twigs, the lees of wine, etc. ¹
¹ Source: wiktionary.com
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1. Noun. A black pigment formerly used in copperplate printing, prepared by burning vine twigs, the lees of wine, etc. ¹
¹ Source: wiktionary.com