Source : Webster's Revised Unabridged Dictionary (1913)

Inure \In*ure"\, v. t. [imp. & p. p. {Inured}; p. pr. & vb. n.
   {Inuring}.] [From pref. in- in + ure use, work. See {Ure}
   use, practice, {Opera}, and cf. {Manure}.]
   To apply in use; to train; to discipline; to use or accustom
   till use gives little or no pain or inconvenience; to harden;
   to habituate; to practice habitually. ``To inure our prompt
   obedience.'' --Milton.

         He . . . did inure them to speak little. --Sir T.
                                                  North.

         Inured and exercised in learning.        --Robynson
                                                  (More's
                                                  Utopia).

         The poor, inured to drudgery and distress. --Cowper.

Inure \In*ure"\, v. i.
   To pass into use; to take or have effect; to be applied; to
   serve to the use or benefit of; as, a gift of lands inures to
   the heirs. [Written also {enure}.]

Source : WordNet®

inure
     v : cause to accept or become hardened to; habituate; "He was
         inured to the cold" [syn: {harden}, {indurate}]