Save Gender Feminine Usage Japanese Scripts らくこ(Japanese Hiragana) 楽子, 洛子, etc.(Japanese Kanji) Pronounced Pron. RAH-KOO-KO [key] Meaning & History From Japanese 楽 (raku) meaning "music" or 洛 (raku) meaning "Kyoto, capital city" combined with 子 (ko) meaning "child". Other kanji combinations are possible.