\Dern\, n. [Etymol. uncertain.]
A gatepost or doorpost. [Local Eng.] --C. Kingsley.

\Dern\, a. [See {Dearn}, a.]
1. Hidden; concealed; secret. [Obs.] ``Ye must be full
   dern.'' --Chaucer.
2. Solitary; sad. [Obs.] --Dr. H. More.