A headbutt or butt is a targeted strike with the head, typically involving the use of robust parts of the headbutter's cranium as the area of impact. The most effective headbutts strike the most sensitive areas of an opponent, such as the nose, using the stronger bones in the forehead or the back of the skull. The word is both a noun and a verb.

A strike is a directed, forceful physical attack with either a part of the human body or with a handheld object, intended to cause blunt or penetrating trauma upon an opponent.