Search gender: all male female トシシロ Japanese Boy Names Variations. 1 names found. gender: all male female Name: toshishiro Katakana: トシシロ 0 Kanji: 利城 Meaning: 利Sharp. Smart. Wise. Good at work. Good. Useful. Convenient. (blade) sharp. To be sharp. To make a profit. To say things. 城Castle You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > トシシロ Japanese Boy Names Variations.