The Collaborative International Dictionary of English v.0.48:

Poss \Poss\, v. t. [See Push.]
   To push; to dash; to throw. [Obs. or Prov. Eng.]
   [1913 Webster]

         A cat . . . possed them [the rats] about. --Piers
                                                  Plowman.
   [1913 Webster]