Search gender: all male female マスサブロウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: masusaburo Katakana: マスサブロウ 0 Kanji: 益三郎 Meaning: 益Increase. Something that is beneficial to people and the world. Something that is useful. Profit. 三Three. The third. Kanji to represent the number 3 (three).Again. Again and again. Many times. 郎Male. Men. Young men. A word that refers broadly to boys. A retainer. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > マスサブロウ Japanese Boy Names Variations.