Gender Masculine Usage Japanese Scripts 大輝, 大樹, etc.(Japanese Kanji) ひろき(Japanese Hiragana) Pronounced Pron. /çi.ɾo̞.kʲi/ Meaning & History From Japanese 大 (hiro) meaning "big, great" and 輝 (ki) meaning "brightness" or 樹 (ki) meaning "tree". Other kanji combinations are also possible.