A young person who belongs to a British or American group that shave their heads and gather at rock concerts or engage in white supremacist demonstrations WordNet 3.0

A member of any of several British or American groups consisting predominantly of young people who shave their heads; some engage in white supremacist and anti-immigrant activities and this leads to the perception that all skinheads are racist and violent Open English WordNet

A skinhead or skin is a member of a subculture that originated among working-class youths in London, England, in the 1960s. Wikipedia

Member of a subculture that originated in the second half of the 1960s in London among working class youths and distinguished by its rebellion Wikidata

Member of the skinhead subculture arising in late 1960s England or its diaspora, often incorrectly associated with violence and white-supremacist or anti-immigrant principles. Wiktionary

Member of skinhead subculture. Wiktionary (translation)