N-SING (两院制议会的)上议院;(英国)贵族院;(美国)参议院,众议院 The second chamber is one of the two groups that a parliament is divided into. In Britain, the second chamber is the House of Lords. In the United States, the second chamber can be either the Senate or the House of Representatives. (两院制议会的)上议院;(英国)贵族院;(美国)参议院,众议院