水すい母ぼFreq.FrequencyTop 100,000Meanings1nounjellyfishrare termRare literary or technical term for jellyfish; in everyday Japanese, クラゲ is used instead.See also: クラゲ「水すい母ぼ」はクラゲの漢かん字じ表ひょう記きの一ひとつだが、普ふ段だんはカタカナで書かく。水母 is one kanji spelling for jellyfish, but it is usually written in katakana.