うつ伏せうつぶせ Noun Noun English jmdict 1 noun (common) (futsuumeishi)nouns which may take the genitive case particle 'no' lying face down;lying on one's face See also: うつ伏せる (うつぶせる) 私はうつぶせに寝た。 I lay on my face. 2 noun (common) (futsuumeishi) placing upside down;placing face down Other forms 俯せ 【うつぶせ】