Backroom (noun)

1. A room located at the back of a building, especially one used for storage or as a workspace.
2. A private or secret room where political or business negotiations take place.

Origin:

From 'back' and 'room' meaning 'a room located at the back of a building'.

Examples:

1. The workers stored their tools and equipment in the backroom of the store.
2. The backroom was used as a conference room for meetings and presentations.
3. The political party leaders held secret negotiations in the backroom before announcing their decision to the public.
4. The backroom was filled with shelves and boxes, making it a cluttered workspace.
5. The band used the backroom as a practice space, jamming for hours on end.