sofa

A long upholstered seat typically with a back and arms.

A long seat or settee with a stuffed bottom and raised stuffed back and ends; a bench or settee upholstered with permanent cushions. See cut under settee.

A long seat, usually with a cushioned bottom, back, and ends; -- much used as a comfortable piece of furniture.

A sofa so contrived that it may be extended to form a bed; -- called also sofa bedstead.

An upholstered seat, typically having sides and back, long enough to accommodate two or more people.