using

(verb): To utilize or employ.
(verb): To accustom; to habituate. (Now common only in participial form. Uses the same pronunciation as the noun; see usage notes.)
(verb): (except in past tense) To habitually do; to be wont to do. (Now chiefly in past-tense forms; see used to.)
(verb): To behave toward; to act with regard to; to treat.
(verb): To behave, act, comport oneself.
(noun): Use; utilization