Eschara is a medical term that refers to a dry scab or dead tissue that forms over a wound, burn or blister. Some synonyms for the word eschara include crust, scab, slough, scale, and dead tissue. The type of eschara that forms depends on the severity and location of the wound. While eschara formation is a natural part of the healing process, it can also lead to complications such as infection or prolonged healing time. In order to prevent these complications, it is important to keep the affected area clean and properly bandaged, and to seek medical attention if necessary.