Definition & Meaning of "sofa bed"

What is a "sofa bed"?

A sofa bed is a piece of furniture that functions as both a sofa and a bed. During the day, it serves as a comfortable seating area for lounging or socializing. At night, it can be transformed into a bed by folding out or unfolding parts of the sofa. Sofa beds are ideal for spaces where there is a need to save room or provide an extra sleeping option, such as in guest rooms, small apartments, or studios. They come in various sizes and styles, offering both convenience and versatility in a single piece of furniture.