backbench

Short definition from Wiktionary

Adjective

1. 1
   relating to the back benches in parliament
2. 2
   Pertaining to the preparation of a donor organ prior to transplantation.
3. 3
   Secondary or inactive.

Noun

1. 1
   A bench at the back of a room or seating area.
2. 2
   A bench at the back of a room or seating area: In a house of legislature following the model of the Westminster system (such as the UK House of Commons), any bench behind either of the front benches and occupied by members of each party group who are not party leaders, cabinet ministers, holders of offices such as the whips, etc.
3. 3
   A bench at the back of a room or seating area: The back row of a classroom.
4. 4
   A bench at the back of a room or seating area: The back pew of a church.
5. 5
   A bench at the back of a room or seating area: A back bench in a courtroom.
6. 6
   A bench at the back of a room or seating area: The back seat of an automobile, van, or bus.
7. 7
   A position of secondary importance.
8. 8
   A group of top-level journalists who jointly review submissions and decide on the layout and emphasis of the newspaper.