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. compare lower chamberTopics Politicsc2