The Collaborative International Dictionary of English v.0.48:

Renne \Ren"ne\ (r?n"ne), v. t.
   To plunder; -- only in the phrase "to rape and renne." See
   under Rap, v. t., to snatch. [Obs.] --Chaucer.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Renne \Ren"ne\, v. i.
   To run. [Obs.] --Chaucer.
   [1913 Webster]