An incrustation over a sore, wound, vesicle, or pustule, formed during healing. / (colloquial or obsolete) The scabies. / The mange, especially when it appears on sheep.

(intransitive) To become covered by a scab or scabs. / (intransitive) To form into scabs and be shed, as damaged or diseased skin. / (transitive) To remove part of a surface (from).

simple past tense and past participle of scab

Affected or covered with scabs. / (by extension) Vile; worthless.

present participle of scab

plural of scab

Third-person singular simple present indicative form of scab

A cancerous sore formed round the corners of a horse's hoof.

(Australia, education) The act of being made to pick up litter, especially as a punishment.

(derogatory) A trade union that serves the employer more than the workers.