To move or act in a lazy, relaxed way; loll: lounging on the sofa; lounged around in pajamas. To pass time idly: lounged in Venice till June. To pass (time) in a lazy, relaxed, or idle way: lounged the day away. A public waiting room, as in a hotel or an air terminal, often having smoking or lavatory facilities. A cocktail lounge. A living room. A lobby. A long couch, especially one having no back and a headrest at one end.