Definition of 兄さん (にいさん)
にい
兄さん
にいさん
niisan
Common word
noun
1.
2.
brother (as older-brother figure in friendly and or work relationship)
3.
young man, buddy, fella, laddie(vocative)
Other readings:
兄さん【あにさん】
Related Kanji
兄 | elder brother, big brother |