Search gender: all male female Kaiun Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: kaiun Katakana: カイウン 0 Kanji: 介韻 Meaning: 介Help. A person who helps. To be near, to accompany. to take care of. To intercede. To make friends with. to separate. to separate. to be firm. To protect tightly. Something that covers the outside to protect oneself. boundary. border. 韻Rhyme You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Kaiun Boy Name Meaning, Kanji Variations.