A strikebreaker is a person who works despite an ongoing strike. Strikebreakers are usually individuals who were not employed by the company before the trade union dispute, but rather hired after or during the strike to keep the organization running.

What does scab mean in slang?

Scab is also a slang term for someone who crosses a picket line during a strike, choosing to work instead of joining coworkers in protesting low wages or harsh treatment by an employer. This kind of scab first meant "unpleasant person" in the late 1500s.

What does scab mean in the UK?

A strikebreaker (sometimes called a scab, blackleg, or knobstick) is a person who works despite an ongoing strike.