Search gender: all male female Roizu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: roizu Katakana: ロイズ 0 Kanji: 芦泉 Meaning: 芦common reed 泉Spring. Water that gushes out of the ground, source. Source of water. Hot spring. The other world. The underworld. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Roizu Boy Name Meaning, Kanji Variations.