Search gender: all male female ロイズ Japanese Boy Names 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 Japanese Names By Kanji > ロイズ Japanese Boy Names Variations.