Akademik

second chamber
noun
: the house in a bicameral legislature that is inferior in status and powers on the ground of constitutional prescription, of custom, or of the locus of responsibility of the ministry, is often originally designed as a check on the other house, and is often constituted on a different basis (as heredity) from election

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ˌsecond ˈchamber [second chamber] noun (especially BrE)
= upper house

Useful english dictionary. 2012.