This is the 7481st most frequent Japanese word.
兄ちゃん
"Older brother" (informal/familiar).
In this sentence, '兄ちゃん' is used to refer to one's older brother in a familiar and affectionate way.
兄ちゃんと一緒に映画を見に行った。
I went to watch a movie with my big brother.
Here, '兄ちゃん' is used to describe one's older brother in a conversational context, emphasizing familial bonds.
兄ちゃんは見た目よりも優しい人だよ。
My big brother is kinder than he appears.
'兄ちゃん' in this sentence recalls childhood memories, expressing a sentimental connection to one's older brother.