- 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.
verb (used without object), scabbed, scab·bing.
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Origin of scab
OTHER WORDS FROM scabscablike, adjective
Example sentences from the Web for scab
Species do not burrow in the skin, but produce a scab similar to sheep scab.Handbook of Medical Entomology|William Albert Riley
Scab Johnny says he loaned Mac a dry outfit an' the old boy dug out for breakfast at seven o'clock an' ain't been around since.Captain Scraggs|Peter B. Kyne
Kjellin rustled up a scab crew and kept the mob off the vessel at the point of a gun.Cappy Ricks|Peter B. Kyne
Do you know, Guy, I think we shall have no scab in the fold this year.The Caxtons, Complete|Edward Bulwer-Lytton
The surrounding land is what is locally known as "scab land."The Archaeology of the Yakima Valley|Harlan Ingersoll Smith
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