Search gender: all male female Osanobu Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: osanobu Katakana: オサノブ 0 Kanji: 長伸 Meaning: 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. 伸Stretch. To extend. To extend and spread. To extend one's influence. To relax. To release tension. To state. to declare. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Osanobu Boy Name Meaning, Kanji Variations.