English
head-kicker
From head + kicker.
Proto-Indo-European *kap- ‘head’
…
Proto-Germanic *haubudą ‘head’
Proto-West Germanic *haubud
Old English hēafod ‘head’
Middle English heed ‘head’
English head
Today it means
noun A member of a group, particularly a political party or trade union, who maintains internal discipline by firmly ensuring members follow rules and directions.
Language periods are conventional ranges, not dates for this word.
Etymograph / head-kicker