Inure

v. accustom; strengthen; put to use; be useful

Verb
1. cause to accept or become hardened to; habituate; "He was inured to the cold"
(synonym) harden, indurate
(hypernym) habituate, accustom
(hyponym) callous, cauterize, cauterise

(v. t.)
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.
  

(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.
  

To take effect, to result; to come into operation. - (read more on Inure)