From Japanese-French FreeDict Dictionary ver. 0.1:
[ichi1] [news1] [nf09] 使い, 遣い, [ichi1] [news1] [nf09] つかい
(noun (common) (futsuumeishi))
使いにやるcommission, dompteur, esprit familier, message, messager, moniteur, mossion, porteur, usage, utilisation