しりこだま 尻子玉 LinksSentence search for 尻子玉Sentence search for しりこだまSentence search for しりごだまKanji details for 尻, 子 and 玉Edit in JMdict Noun1. mythical ball inside the anus that is sought after by kappaSee also 河童Other forms尻子玉 【しりごだま】Notesしりごだま: Out-dated or obsolete kana usage. Discussions Log in to talk about this word.