Search gender: all male female ロウザ Japanese Boy Names Variations. 1 names found. gender: all male female Name: roza Katakana: ロウザ 0 Kanji: 楼三 Meaning: 楼Tower 三Three. The third. Kanji to represent the number 3 (three).Again. Again and again. Many times. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > ロウザ Japanese Boy Names Variations.