Definiciones
1.NounOne who dances by violently shaking the head in time to the music.
2.NounOne who enjoys heavy metal (rock) music, to which this sort of dance is usually performed.
3.NounA violently deranged, extreme or fanatical person; a nutcase.
4.NounA silly or eccentric person.
5.NounA political hardliner, especially an obstructive one.
6.NounA person who engages in street violence, especially in support of a political group.
7.NounA kind of chin-up or pull-up exercise where the head is kept in line with the bar.