Save Gender Masculine Usage Japanese Scripts 哲生, 鉄騎, etc.(Japanese Kanji) Pronounced Pron. TEH-TSOO-KEE [key] Meaning & History From Japanese 哲 (tetsu) meaning "philosophy, clear" or 鉄 (tetsu) meaning "iron" combined with 樹 (ki, itsuki) meaning "tree". Other kanji combinations can be used.