Search gender: all male female Hiromaro Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: hiromaro Katakana: ヒロマロ 0 Kanji: 宏麿 Meaning: 宏Large. Big. Expand. Excellent. To be splendid. 麿Me. First person. A suffix added to a person's name. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Hiromaro Boy Name Meaning, Kanji Variations.