Search gender: all male female トセコ Japanese Girl Names Variations. 1 names found. gender: all male female Name: toseko Katakana: トセコ 0 Kanji: 十瀬子 Meaning: 十Ten. Kanji character for the number 10 (ten). The next number after nine. A large number. A number of things. A shape in which lines intersect vertically and horizontally. 瀬Ford 子Children You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > トセコ Japanese Girl Names Variations.