jackboot

noun

A stout military boot that extends above the knee.

A person who uses bullying tactics, especially to force compliance.

The spirit sustaining and motivating a militaristic, highly aggressive, or totalitarian regime or system.

A kind of large boot reaching up over the knee, and serving as defensive armor for the leg, introduced in the seventeenth century; now, a similar boot reaching above the knee, worn by fishermen and others.

A man's high tasseled boot.