- a disease of plants characterized by crustlike lesions on the affected parts and caused by a fungus or bacterium.
- one of these crustlike lesions.
- a projection or roughness on an ingot or casting from a defective mold.
- a surface defect on an iron or steel piece resulting from the rolling in of scale.
Origin of scab
OTHER WORDS FROM scabscablike, adjective
How to use scab in a sentence
Before vaccines, physicians would blow smallpox scabs up people’s noses or stab them with pus-laced needles to build up their resistance to the virus.It might not always take years to develop vaccines|Ula Chrobak|November 19, 2020|Popular-Science
Late last week, Baez was successful in scratching the ugly scab of Anthony family dysfunction.
The vesicles dry gradually, and between the fourteenth and twentieth days the scab falls off, leaving a pitted scar.Essays In Pastoral Medicine|Austin Malley
Across his back there was a furrow through his fur, and a long scab where a bullet had raked him.The Red Cow and Her Friends|Peter McArthur
I think the colonial surgeons call the disease the "bush scab;" and that it is occasioned by a filthy mode of life.
These continue for a short time, break, discharge their matter, and are followed by a blackish scab.A Treatise on Sheep:|Ambrose Blacklock
There is not the least bit of sense in belonging to a union if you are to become a "scab" when you go to the ballot-box.The Common Sense of Socialism|John Spargo
British Dictionary definitions for scab
- Also called: blackleg a person who refuses to support a trade union's actions, esp one who replaces a worker who is on strike
- (as modifier)scab labour