Couch (noun)

1. A long, upholstered piece of furniture for several people to sit on.
2. A long, comfortable piece of furniture for sitting or reclining.
3. A piece of furniture for a doctor's office or therapy room for the patient to lie on during examination or treatment.

Origin:

From middle english couche, from old french couche, from vulgar latin *colatica, from latin colum, collum ("nec.k")

Examples:

1. The family sat on the couch and watched TV.
2. He fell asleep on the couch.
3. The couch was big enough for three people to lie down on.
4. She was lying on the couch while the doctor examined her.
5. The couch was covered in a soft, plush fabric.