From Longman Dictionary of Contemporary Englishcouchcouch1 /kaʊtʃ/ ●●● S3 noun [countable] 1 
DHFa comfortable piece of furniture big enough for two or three people to sit on SYN sofa, settee Tom offered to sleep on the couch.2 DHFa long narrow bed for a doctor’s or psychiatrist’s patients to lie on
DHFa comfortable piece of furniture big enough for two or three people to sit on SYN sofa, settee Tom offered to sleep on the couch.2 DHFa long narrow bed for a doctor’s or psychiatrist’s patients to lie onExamples from the Corpus
couch• A television set was placed at the end of the purple couch, right at arm level.• We bounced, as did the couches.• The bed has been removed; so has the couch.• He staggered round the rear of the couch, feet crunching in plaster, and sat down.• With the arm resting on the couch the force needed to accelerate the arm is coming from the material of the couch.• After 20 years on the couch, Richard is finally giving up therapy.• Benjy pushed the cushions back on to the couch.• The couch has been recently reupholstered.couchcouch2 verb → be couched in something→ See Verb tableExamples from the Corpus
couch• The answer to this question needs to be couched as much in curriculum terms as in assessment terms.• Reporters could not attend meetings, press releases were couched in generalities and favoured the conservative line.• It was also couched in language designed to satisfy or at least not to alarm a multitude of constituencies at home.• While the description of the problem is couched in literary terms, hypotheses ought to be couched in operational terms.• The Declaration of Rights itself was couched in the language of political conservatism.• The language of the Bible is couched in the language of the first century.Origin couch1 (1300-1400) French couche, from coucher “to lie”, from Latin collocare “to put in place”; → COLLOCATE 