Crucifix position
The crucifix position is a ground grappling position that involves being perpendicularly behind the opponent, chest against back, and controlling the opponent's arms. One of the opponent's arms is controlled using the legs, and the other using the arms, hence effectively putting the opponent in a position resembling a crucifix. A top variation can also be applied from side control.
This position allows for strikes to the head and neck, as well as both gi and no-gi submission holds, most notably a collar strangle called the crucifix choke. It is also possible to apply the crucifix position in such a way that a crucifix neck crank can be applied.