sofa bed

WordReference Random House Learner's Dictionary of American English © 2025

ˈso•fa ˌbed or ˈso•faˌbed, n. [countable]

1. Furniture a sofa that can be converted into a bed.

WordReference Random House Unabridged Dictionary of American English © 2025

so′fa bed′, 

1. Furniture a sofa that can be converted into a bed, either by folding out the seat or by lowering the back to be flush with the seat.

Also, so′fa-bed′, so′fa•bed′. Also called so•fa-sleep•er, so•fa/sleep•er  (sō′fə slē′pər). 

• 1810–20