The Collaborative International Dictionary
Plumbean
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
plumbean
a. Variant of plumbeous.