Wiktionary
headbanging
n. A type of dance associated with rock or heavy metal music, in which the head is shaken violently in time with music vb. (present participle of headbang English)
Wikipedia
Headbanging
Headbanging is violently shaking one's head in time with music, normally to whip long hair back and forth. Headbanging is sometimes used by musicians on stage, and is most common in the rock, punk and heavy metal music genres.
Usage examples of "headbanging".
He was leaving the interstate for a county road at the end of which squatted an impenetrable converted garage that was home to him, his priceless collection of three-thousand-plus headbanging classics in all formats, and five jumpy dogs.
Besides the headbanging, these metal-chicks ran another racket on the side.