The Collaborative International Dictionary of English v.0.48:

Kimmerian \Kim*me"ri*an\, a.
   See Cimmerian.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Cimmerian \Cim*me"ri*an\, a. [L. Cimmerius.] [Written also
   Kimmerian.]
   1. Pertaining to the Cimmerii, a fabulous people, said to
      have lived, in very ancient times, in profound and
      perpetual darkness.
      [1913 Webster]

   2. Without any light; intensely dark.
      [1913 Webster]

            In dark Cimmerian desert ever dwell.  --Milton.
      [1913 Webster]