Deád-spring

According to the Old English Dictionary:

es;

deád-spring

m. [spring an ulcer] A malignant ulcer, carbuncle; carbuncŭlus :-- Wið wúnda and wið deádspringas for wounds and ulcers, Herb. 4, 2; Lchdm. i. 90, 5; 9, 2; Lchdm. i. 100, 1: 87, 3; Lchdm. i. 190, 24: 91, 7; Lchdm. i. 200, 17. dead-spring