WEBJapanese Dictionary. Meaning of お尻 おしり in Japanese. お尻. おしり. oshiri. noun (common) (futsuumeishi) arse; ass; bottom; buttocks. 赤ん坊 のお尻 みたいに すべすべ だ 。 It's as smooth as a baby's bottom. Examples of お尻, おしり in a sentence. 赤ん坊 の お尻 みたいに すべすべ だ 。 It's as smooth as a baby's bottom. Kanji in this word. 尻. 5 …