couch noun

ADJ. comfortable | wide | psychiatrist's She spends several hours a week on the psychiatrist's couch.

VERB + COUCH lie (down) on, recline on, sink back on, sink into, sit (down) on, sprawl on, stretch (out) on They sat down on the wide couch. | get up from, rise from, slide off, swing your legs/yourself off

PREP. on a/the ~ He slept on the couch.

COUCH + NOUN potato (figurative) (= sb who spends all their time sitting on a couch) He's turned into a real couch potato since he subscribed to the sports channel.