Found one definition

  1.                 From Japanese-English FreeDict Dictionary ver. 0.1:
                    

    [ichi1] [news1] [nf09] 使い, 遣い, [ichi1] [news1] [nf09] つかい 1. (noun (common) (futsuumeishi)) 使いにやるerrand, mission, going as envoy 2. messenger, bearer, errand boy, errand girl 3. 使い魔familiar spirit 4. (noun, used as a suffix) (noun, used as a prefix) 魔法使い (often read as づかい when used as a suffix) use, usage, user, trainer, tamer, charmer