Search gender: all male female Gairu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: gairu Katakana: ガイル 0 Kanji: 凱瑠 Meaning: 凱Triumph. A voice given when one wins a battle or competition. 瑠Lapis lazuli. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Gairu Boy Name Meaning, Kanji Variations.