Search gender: all male female シルワ Japanese Girl Names Variations. 1 names found. gender: all male female Name: shiruwa Katakana: シルワ 0 Kanji: 知瑠環 Meaning: 知Knowing. Wisdom. The ability to think. News. Acquaintance. To preside over. To govern. 瑠Lapis lazuli. 環A ring. Form of a circle. A round ball. To go around. To surround. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > シルワ Japanese Girl Names Variations.