What does scab mean?
A scab is a protective crust that forms over a wound, or a person who refuses to join a trade union. To scab is to work in a place where a trade union is on strike, or to betray a trust.
Example
"The scab on his knee was starting to itch."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.