Search gender: all male female 栃 Japanese Names Variations. 1 names found. gender: all male female Name: tochio Katakana: トチオ 0 Kanji: 栃男 Meaning: 栃Japanese horse chestnut (Aesculus turbinata) 男Male. Adult male. Son. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 栃 Japanese Names Variations.