What does 兄ちゃん mean?
兄ちゃん is a Japanese noun meaning “(one's) older brother” in English. It can also be translated as “young man” depending on context. It is written as 兄ちゃん in kanji, にいちゃん in hiragana, and niichan in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
兄ちゃん、こっち生中二つー。
Kiddo! Two medium-size drafts here.