noun
futon
FOO-tahn/ˈfuːtɑːn/
A mattress or cushioned bed used for sleeping and sometimes sitting.
The futon in our guest room doubles as a couch.

Etymology
The Japanese word is said to mean 'bedroll' or 'place to rest.' This connects the name with its sleeping function, even when the futon also serves as a sofa.
In context
And I was literally sleeping on a Japanese futon, which basically meant I was sleeping on the floor.
More examples
- We roll out a futon on the floor each night.
- She unfolds the futon when guests stay overnight.
- These futons have removable covers that are easy to wash.
Forms
futon · futons