Search gender: all male female カシロウ Japanese Boy Names Variations. 1 names found. gender: all male female Name: kashiro Katakana: カシロウ 0 Kanji: 甲子郎 Meaning: 甲Carapace 子Children 郎Male. Men. Young men. A word that refers broadly to boys. A retainer. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > カシロウ Japanese Boy Names Variations.