What is a long sofa called?

A long sofa is usually called a chaise longue (in America, this is sometimes referred to as a chaise lounge). A chaise longue is a low reclining seat — it’s not quite a daybed, nor is it a sofa. It is an upholstered piece of furniture that gained popularity in France in the early 16th century. Shop a collection of antique, vintage, and contemporary chaise longues from some of the world’s top dealers on 1stDibs.