Search gender: all male female 疎 Japanese Boy Names Variations. 1 names found. gender: all male female Name: soseki Katakana: ソセキ 0 Kanji: 疎石 Meaning: 疎Be unfamiliar with 石Stone. Something made of stone. A metaphor for something hard. A metaphor for something that is inflexible. A mineral medicine. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > 疎 Japanese Boy Names Variations.