An example of scab is for a cut to begin to heal.
An example of a scab is a crust over a cut.
An example of a scab is a person who takes over the job of a worker who is striking against an employer.
Origin of scab
- Middle English from Old Norse skabb
From American Heritage Dictionary of the English Language, 5th Edition
- From Old English sceabb, Old Norse skabb, Latin scabies (“scab, itch, mange.") Cognate with Old English scafan, Latin scabere (“to scratch").