What does 何～ mean?
何～ is a Japanese noun meaning “what sort of ~” in English. It is written as 何～ in kanji, なん～ in hiragana, and nan～ in romaji. This word is part of JLPT N5 vocabulary.
Example sentence
何でそんなことしたか思い出せないんだ。
I can't remember why I did that.