Save Gender Masculine Usage Japanese Scripts 伍郎, 一朗, 一郎, etc.(Japanese Kanji) Pronounced Pron. EE-TSOO-ṘO: [key] Meaning & History From Japanese 伍 (itsu) meaning "five" or 一 (itsu) meaning "one" combined with 朗 (rou) meaning "bright, clear" or 郎 (rou) meaning "son". Other kanji combinations are possible.