Emily Dickinson Lexicon

IN-URE', v.t. [in and ure. Ure signifies use, practice, in old English, and Norman French. In Chaucer, it seems to bear rather the signification of luck or fortune. In Scottish, it is used in both senses. See Ure.]

To habituate; to accustom; to apply or expose in use or practice till use gives little or no pain or inconvenience, or makes little impression. Thus a man inures his body to labor and toil, till he sustains that which would destroy a body unaccustomed to it. So we inure ourselves to cold or heat. Warriors are inured to blood, and seamen are inured to hardships and deprivations.