Search gender: all male female Hirobo Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: hirobo Katakana: ヒロボウ 0 Kanji: 弘坊 Meaning: 弘Wide. Large. To spread, to convey widely. Large in scale, large in quantity. 坊Monk You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Hirobo Boy Name Meaning, Kanji Variations.