The Collaborative International Dictionary of English v.0.48:

Provine \Pro*vine"\, v. i. [F. provingner, fr. provin a set,
   layer of a plant, OF. provain, from L. propago, -aginis, akin
   to propagare to propagate. See Propagate, Prune, v. t.]
   To lay a stock or branch of a vine in the ground for
   propagation. [Obs.] --Johnson.
   [1913 Webster]