Noun: backroom boy
Usage: Brit, informal
Usage: Brit, informal
- A male expert adviser involved in making important decisions but usually lacking official status
"The backroom boy played a crucial role in shaping the campaign strategy"
Derived forms: backroom boys
Type of: adult male, bozo [N. Amer, informal], brain truster [N. Amer], cat [N. Amer, informal], chappie [Brit, informal], geezer [Brit, informal], guy [informal], hombre [N. Amer, informal], man, sod [informal]