- A crust formed by coagulation of blood, pus, serum, or a combination of these, on the surface of an ulcer, erosion, or other type of wound. [A.S. scaeb]
* * *scab 'skab n1) scabies of domestic animals2) a hardened covering of dried secretions (as blood, plasma, or pus) that forms over a wound called also crustscab vi, scabbed; scab·bing to become covered with a scab <the wound scabbed over>
* * *n.a hard crust of dried blood, serum, or pus that develops during the body's wound-healing process over a sore, cut, or scratch.
* * *(skab) 1. a crust formed on the surface of a wound. 2. to become covered with such a crust. 3. scabies in domestic animals.
Medical dictionary. 2011.