upper chamber
noun🔊/ˌʌpə ˈtʃeɪmbə(r)/
🔊/ˌʌpər ˈtʃeɪmbər/
(also upper house)
(also second chamber especially in British English)
[singular]one of the parts of a parliament in countries which have a parliament that is divided into two parts. In Britain it is the House of Lords and in the US it is the Senate. 上议院；（英国）贵族院；（美国）参议院