Definition of 飼い主 (かいぬし)
かぬし
                        飼い主
かいぬし
kainushi
Common word
noun
•
                
(pet) owner, keeper
Other readings:
                飼主【かいぬし】
                Related Kanji
| 飼 | domesticate, raise, keep, feed | 
| 主 | lord, chief, master, main thing, principal |