Search gender: all male female Keisui Boy Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: keisui Katakana: ケイスイ 0 Kanji: 渓水 Meaning: 渓Valley 水Water. Something liquid. Sea, river, swamp, lake, spring, etc. To work with water. To moisten. To soak in. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Keisui Boy Name Meaning, Kanji Variations.