Source : Webster's Revised Unabridged Dictionary (1913)

Plumbean \Plum"be*an\, Plumbeous \Plum"be*ous\, a. [L. plumbeus,
   from plumbum the metal lead.]
   1. Consisting of, or resembling, lead. --J. Ellis.

   2. Dull; heavy; stupid. [R.] --J. P. Smith.