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
The position in football responsible for tackling opponents on the field is the defensive player, specifically the linebacker or defensive back.
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.
Defensive End.
right defensive end
Defensive Ends
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.
In football terminology, FS means Free Safety, a defensive position.
The fullback position is typically utilized in an offensive role in football.
Middle Linebacker