Save Gender Feminine Usage Japanese Scripts 弥己, 椰子, 夜己, 耶子, 弥湖, etc.(Japanese Kanji) Pronounced Pron. YAH-KO [key] Meaning & History From Japanese 椰 (ya) meaning "palm tree" combined with 子 (ko) meaning "child" or 己 (ko) meaning "oneself, iself". Other kanji combinations are also possible.