Abbreviation of 衆議院 (しゅうぎいん), the lower house of Japan's National Diet. Common in news and political discussion.
See also: 衆議院
The House of Representatives election is scheduled for next month.
法案は衆院を通過した。
The bill passed the House of Representatives.
The prime minister decided to dissolve the House of Representatives.
An election for the House of Representatives is scheduled to be held next month.