Save Gender Feminine Usage Japanese (Modern, Rare) Scripts 心子(Japanese Kanji) こころ子(Kanji/Hiragana) こころこ(Japanese Hiragana) ココロコ(Japanese Katakana) Pronounced Pron. KO-KO-RO-KO [key·IPA] Meaning & History From Kokoro combined with 子 (ko) meaning "child."This name is extremely rare.