What is the correct term for a knife hand strike?

The term for a knife hand strike is "Son Nal Chi Ki." This term specifically refers to the technique that utilizes the side of the hand (the knife edge) to deliver a strike. In martial arts, this strike is often used for precision targeting, typically aimed at vulnerable areas of an opponent such as the neck or temple.

Understanding the term's components, "Son Nal" translates to "hand knife," indicating the striking surface, while "Chi Ki" refers to the action of striking. This terminology is essential in martial arts as it conveys specific techniques and their intended effects.

In contrast, the other terms refer to different types of strikes or techniques: "Baro Jir Ki" and "Doo Bun Jir Ki" are not relevant to the knife hand technique, as they pertain to other forms of strikes (like a downward strike and a specific type of double punch). "Momtong Jir Ki," on the other hand, refers to a middle punch, highlighting the distinction among different strikes in martial arts terminology.