WIKTIONARY

scab

Noun

∙ An incrustation over a sore, wound, vesicle, or pustule, formed during healing.
∙ The scabies. colloquial or obsolete
∙ The mange, especially when it appears on sheep.
∙ Any of several different diseases of potatoes producing pits and other damage on their surface, caused by streptomyces bacteria (but formerly believed to be caused by a fungus).
∙ Common scab, a relatively harmless variety of scab (potato disease) caused by Streptomyces scabies.
∙ Any one of various more or less destructive fungal diseases that attack cultivated plants, forming dark-colored crustlike spots. phytopathology
∙ A slight irregular protuberance which defaces the surface of a casting, caused by the breaking away of a part of the mold. founding
∙ A mean, dirty, paltry fellow.
∙ A worker who acts against trade union policies, especially a strikebreaker. slang

Verb

∙ To become covered by a scab or scabs. intransitive
∙ To form into scabs and be shed, as damaged or diseased skin. intransitive
∙ To remove part of a surface (from). transitive
∙ To act as a strikebreaker. intransitive
∙ To beg (for), to cadge or bum. transitive, Britain, Australia, New Zealand, informal

English Dictionary

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