Source : Webster's Revised Unabridged Dictionary (1913)

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.

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