The Collaborative International Dictionary
Plumbaginous
Plumbaginous \Plum*bag"i*nous\, a. Resembling plumbago; consisting of, or containing, plumbago; as, a plumbaginous slate.
Wiktionary
plumbaginous
a. Resembling plumbago; consisting of, or containing, plumbago
Usage examples of "plumbaginous".
Matrix thro' which these Plumbaginous Orbs are distributed, proves to be of a peculiar sort, already familiar to you.