futon Syllabification: (fu·ton)Pronunciation: /ˈfo͞oˌtän/Translate futon | into German Definition of futon noun a Japanese quilted mattress rolled out on the floor for use as a bed. a type of low wooden sofa that can be unfolded for use as a bed. Origin: late 19th century: Japanesefuton in other Oxford dictionaries Definition of futon in the British & World English dictionary