The term UPPER HOUSE refers to a legislative body in some countries, such as the United States and Australia. The two crossword solutions for this term are SENATE (6 letters) and AERIE (5 letters). The SENATE is the upper house of the United States Congress, which is composed of two chambers: the SENATE and the House of Representatives. The AERIE is the upper house of the Australian Parliament, which is composed of two chambers: the SENATE and the House of Representatives.