Definition of: plumbago

(plum·bā′gō) noun plural ·gos
1. Graphite: used for pencils, crucibles, lubricating, and in electroplating to coat non–conducting surfaces, as gutta–percha.
2. A drawing made with a lead–pointed instrument.
3. Any of a genus (Plumbago) of hardy, shrubby plants cultivated for their showy blue, white, or purplish flowers: also called leadwort. [<L plumbum lead]
—plum·bag′i·nous (-baj′ə·nəs) adjective