Search gender: all male female Sekishusai Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: sekishusai Katakana: セキシュウサイ 0 Kanji: 石舟斎 Meaning: 石Stone. Something made of stone. A metaphor for something hard. A metaphor for something that is inflexible. A mineral medicine. 舟A boat. A small boat. A tub shaped like a boat. 斎Purify oneself (e.g. heart, mind and body) You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Sekishusai Boy Name Meaning, Kanji Variations.