Search gender: all male female Kumu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: kumu Katakana: クム 0 Kanji: 玖夢 Meaning: 玖Beautiful black stone 夢Dream. Something you see as if it were real when you are asleep. Something you hope to achieve in the future. A pleasant thought that takes you away from reality. Something fleeting. Uncertainty. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Kumu Boy Name Meaning, Kanji Variations.