Murk, n. The refuse of fruit, after the juice has been expressed; marc.
  ◄ ►
  Murk a.  Dark; murky.
     He can not see through the mantle murk.   --J. R. Drake.
  Murk, n. Darkness; mirk. [Archaic]
  murk
       n : an atmosphere in which visibility is reduced because of a
           cloud of some substance [syn: fog, fogginess, murkiness]
       v : make dark, dim, or gloomy