noun, plural plum·ba·gos.
Origin of plumbago
Examples from the Web for plumbago
Historical Examples of plumbago
As the last, but employing shredded tow or plumbago for horse-dung.Cooley's Practical Receipts, Volume II
As the preceding, but employing mixtures of plumbago and crocus in various proportions according to the shade desired.
The crucibles commonly used for fusing metals are formed of clay, or a mixture of plumbago and clay.
So, getting no reply, he added, "I presume that your plumbago is better."The Rainbow Book Tales of Fun & Fancy
Mabel Henriette Spielmann
There is therefore reason to believe that this plumbago had been in fusion.Theory of the Earth, Volume 1 (of 4)
noun plural -gos
Word Origin for plumbago
"graphite," 1784, from Latin plumbago "a type of lead ore, black lead," from plumbum "lead" (see plumb (n.)); it renders Greek molybdaina, which was used of yellow lead oxide and also of a type of plant (leadwort). Attested in English in the yellow oxide sense from 1610s; as a type of plant from 1747. Related: Plumbaginous.