carbon, as animal black or lampblack, formed into pellets by mixing with water or glue: used as a black pigment.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for drop black
Historical Examples of drop black
The stain is made from drop-black in oil, tinged with a little rose pink, and thinned with japan and turpentine.The Library of Work and Play: Home Decoration
Charles Franklin Warner