Search gender: all male female Tosako Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: tosako Katakana: トサコ 0 Kanji: 土佐子 Meaning: 土Soil 佐Auxiliary. To help. To support and help by your side. To encourage. 子Children You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Tosako Name Meaning, Kanji Variations.