Source : Webster's Revised Unabridged Dictionary (1913)

Commonable \Com"mon*a*ble\, a.
   1. Held in common. ``Forests . . . and other commonable
      places.'' --Bacon.

   2. Allowed to pasture on public commons.

            Commonable beasts are either beasts of the plow, or
            such as manure the ground.            --Blackstone.