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.

Source : WordNet®

inured
     adj : made tough by habitual exposure; "hardened fishermen"; "a
           peasant, dark, lean-faced, wind-inured"- Robert Lynd;
           "our successors...may be graver, more inured and
           equable men"- V.S.Pritchett [syn: {enured}, {hardened}]