The Collaborative International Dictionary
Plumbeous
Plumbean \Plum"be*an\, Plumbeous \Plum"be*ous\, a. [L. plumbeus, from plumbum the metal lead.]
Consisting of, or resembling, lead.
--J. Ellis.Dull; heavy; stupid. [R.]
--J. P. Smith.
Wiktionary
plumbeous
a. 1 Consisting of, or resembling, lead. 2 (context rare English) dull; heavy; stupid.
Wikipedia
Usage examples of "plumbeous".
A deep shining plumbeous black on the upper part, becoming paler near the belly, which from the underpart of the jaw to the perineum is ashy-grey, with irregular spots and blotches.
The bare wood of its tapered end has darkened to plumbeous plum, thus merging in tint with the blunt tip of graphite whose blind gloss alone distinguishes it from the wood.