Search gender: all male female Jiruba Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: jiruba Katakana: ジルバ 1 Kanji: 虹留波 Meaning: 虹Rainbow. 留Stays. To hold in place. To be still and unmoving. 波Waves. The motion of the surface of water. Something that moves like a wave. Something that is transmitted like a wave. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Jiruba Boy Name Meaning, Kanji Variations.