In English mean swinging back elbow
The boxer bends the right elbow in to the front and overturns the hand to the backhand. Holds on to the right arm at the level of the opponent's chest or chin and turns the body back to the left the weight on the left foot, then swings back the right elbow to the opponent's jaws or chin. This trick is used for defense or escape.
To counter
Inserts the left or right hand in the opponent's arm and pulls down the opponent's neck in the front with the other hand, then throws the knee to the opponent's face or chin. If the boxer is a left handed fighter reverse the descriptions from right to left.