Search gender: all male female Kajinaga Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: kajinaga Katakana: カジナガ 0 Kanji: 梶長 Meaning: 梶Treetop 長Long. Long distance or interval. A large range of time. Nurture. advantage. Relaxed. Eldest. Things that are at the top. Something that is useless. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Kajinaga Boy Name Meaning, Kanji Variations.