0 a room in which work or other activities are done out of public view or secretly:
backroom staff
backroom negotiations
1 done secretly or without attracting attention:
They did a last-minute backroom deal with the union negotiators.
backroom negotiations/politics
2 used to describe the people in an organization whose work is not seen by the public:
If we were to move from a cottage-industry microfilming operation in the backrooms of a few major research libraries, a new nationwide infrastructure was needed.
They have been working—these backroom boys—for a long time, and have made great strides forward.
Measures are being taken in backroom deals that are not subject to parliamentary scrutiny or judicial review.
What we now have is a backroom deal on citizens’ rights, and that is just not good enough.
I would like to refer to two backroom departments.
This addition will help to fill a gap and will bring products out of the backroom and into the showroom.
Indeed, there are very few inventors today—the old backroom artisans—who gain from their ideas.
The more elaborate aeroplanes become the more backroom staff is needed, not only to fly them, but to get them into the air.