nose tackle
Actually the Monster Back or Rover is typically the Strong Safety who moves up to linebacker depth as a run-stopper.
Defensive Lineback
In American football, a "rover" is a defensive player who "roves" from linebacker to defensive back, or roves from cornerback to safety in the defensive bakefield. The rover has no fixed position. The abbreviation ROV stands for ROVER.
A defensive end is the name of a defensive position in American and Canadian football, situated at each end of the defensive line.
A Nickleback is a defensive position in football who is not in on all plays. It is a cornerback position who is considered the fifth defensive back on the line. This position only enters the game when a nickel defense is required.
Defensive End.
Defensive Ends
right defensive end
In football terminology, FS means Free Safety, a defensive position.
Strong Side Defensive End
Middle Linebacker
That would be the Outside Line Backer on the Defensive Team.