Search gender: all male female Ryusu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: ryusu Katakana: リュウス 0 Kanji: 琉澄 Meaning: 琉Ruri(lapis lazuli). Name of a gemstone. A deep blue to indigo-colored gemstone. One of the seven treasures. 澄Clear. Water and sounds are clear and beautiful. The sky is not dull. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Ryusu Boy Name Meaning, Kanji Variations.