Bull

The name “bull” does not refer to a fixed position, play, or regulation in American football. The word “bull rush” is, nonetheless, commonly used in football, most often to describe the actions of defensive linemen.

Defensive linemen utilize a “bull rush” when they try to force an offensive lineman backwards into the quarterback or ball carrier by using their power and leverage rather than dodging or skirting the blocker. The defensive player’s goal is to overwhelm the attacking player physically.

Aside from certain situations within teams or coaching techniques, the term “bull” is not commonly used in American football. You should probably go there if you need clarification on the meaning of “bull” as it was used in a certain football situation.