Any eczemalike skin disease.

ETYM Old Eng. scab, scabbe, shabbe; cf. as. scaeb, sceabb, scebb, Dan. and Swed. skab, and also Latin scabies, from scabere to scratch, akin to Eng. shave. Related to Shave, Shab, Shabby.
1. The crustlike surface of a healing skin lesion.
2. A crust of hardened blood and serum over a wound.
3. Any of various bacterial or fungus diseases of plants characterized by crustaceous spots; also; one of the spots. + prikaži više

ETYM AS. scurf, sceorf, or from Scand.; cf. Swed. skorf, Dan. skurv, Icel. skurfur, Dutch schurft, German schorf; all akin to AS. scurf, and to AS. sceorfan to scrape, to gnaw, German schürfen to scrape, and probably also to Eng. scrape. Related to Scurvy.
(Botany) A covering that resembles scales or bran that covers some plant parts.