The Collaborative International Dictionary of English v.0.48:

Scomm \Scomm\ (sk[o^]m), n. [L. scomma a taunt, jeer, scoff, Gr.
   ?, fr. ? to mock, scoff at.]
   1. A buffoon. [Obs.] --L'Estrange.
      [1913 Webster]

   2. A flout; a jeer; a gibe; a taunt. [Obs.] --Fotherby.
      [1913 Webster]