Gender Masculine Usage Japanese Scripts 一郎, etc.(Japanese Kanji) いちろう(Japanese Hiragana) Pronounced Pron. /i.t͡ɕi.ɾo̞ː/ Meaning & History From Japanese 一 (ichi) meaning "one" and 郎 (rō) meaning "son". This was traditionally a name given to the first son. Other combinations of kanji characters are also possible.