Source : Webster's Revised Unabridged Dictionary (1913)

Discommon \Dis*com"mon\, v. t.
   1. To deprive of the right of common. [R.] --Bp. Hall.

   2. To deprive of privileges. [R.] --T. Warton.

   3. (Law) To deprive of commonable quality, as lands, by
      inclosing or appropriating. --Burrill.