Eschar

Definition:

(n.) A dry slough, crust, or scab, which separates from the healthy part of the body, as that produced by a burn, or the application of caustics.
(n.) In Ireland, one of the continuous mounds or ridges of gravelly and sandy drift which extend for many miles over the surface of the country. Similar ridges in Scotland are called kames or kams.

Compare eschar with other words:

eschar vs. sore