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.