<p><strong>Noun</strong></p><ul><li>a couch that can be used as a sofa by day and a bed by night.</li><li>a couch, especially of the 17th or 18th century, in the form of a usually armless chair, with a greatly elongated seat supported by extra legs and a slanted, sometimes hinged, back, used for reclining or sleeping during the day.</li></ul>