The Elbow Slash

This Elbow Slash is used for targets like head, forehead, nose, brow bone, eye or temple.

The technique is to bring the elbow diagonally downwards against the target. The book said that the angle of your elbow should be 45 degree so just it's good to keep it around that. Slashing like you're using a sword to slash someone downwards. It's the same feeling. Nowadays this method is not usually used because the "up and down" motion is quite hard to perform. Most fighters prefer to use the Horizontal Elbow instead.