Search gender: all male female Riruku Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: riruku Katakana: リルク 0 Kanji: 凛瑠久 Meaning: 凛dignified. Having a dignified attitude. Solemn. Crisp and tightly cold. 瑠Lapis lazuli. 久For a long time. From long ago. From the past. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Riruku Boy Name Meaning, Kanji Variations.