Source : Webster's Revised Unabridged Dictionary (1913)

Proll \Proll\, v. t. [See {Prowl}.] [imp. & p. p. {Prolled}; p.
   pr. & vb. n. {Prolling}.]
   To search or prowl after; to rob; to plunder. [Obs.]
   --Barrow.

Proll \Proll\, v. i.
   To prowl about; to rob. [Obs.] --South.

         Though ye prolle aye, ye shall it never find.
                                                  --Chaucer.