The Collaborative International Dictionary of English v.0.48:

Usure \U"sure\ (?; 115), v. i. [imp. & p. p. Usured; p. pr. &
   vb. n. Usuring.] [Cf. OF. usurer, LL. usurare.]
   To practice usury; to charge unlawful interest. [Obs.] "The
   usuringb senate." --Shak.
   [1913 Webster]

         I usured not ne to me usured any man.    --Wyclif (Jer.
                                                  xv. 10).
   [1913 Webster]