backfield
/ˈbækfiːld/Definitions
1. noun
The area of a football field behind the line of scrimmage, where the offense’s running backs, fullbacks, and other players typically line up.
“The defensive coach studied the backfield to anticipate their next move.”
2. noun
A position or area of work or activity, especially one that is less prominent or visible.
“He worked in the backfield of the office, processing paperwork and reports.”