両院

プログレッシブ和英中辞典(第4版)

りょういん【両院】

「the two [both] Houses；《米》 the House (of Representatives) and the Senate, both Houses of Congress

法案は両院とも通過した
The bill passed both Houses.

両院協議会

a joint committee (of the two Houses)；《米》 a conference committee (of the House and the Senate)

出典　小学館「プログレッシブ和英中辞典(第4版)」