splent coal

from The Collaborative International Dictionary of English v.0.48

Splent \Splent\ (spl[e^]nt), n.
   1. See {Splent}.
      [1913 Webster]

   2. See {Splent coal}, below.
      [1913 Webster]

   {Splent coal}, an inferior kind of cannel coal from Scotch
      collieries; -- called also {splent}, {splint}, and {splint
      coal}.
      [1913 Webster]