Canker

kang′kėr, n. an eating sore: a gangrene: a disease in trees, or in horses' feet: anything that corrupts, consumes, irritates, or decays.— v.t. to eat into, corrupt, or destroy: to infect or pollute: to make sour and ill-conditioned.— v.i. to grow corrupt: to decay.— adj. Cank′ered , corroded: venomous, malignant: soured: crabbed.— adv. Cank′eredly .— n. Cank′eredne .— adj. Cank′erous , corroding like a canker.— n. Cank′er-worm , a worm that cankers or eats into plants.— adj. Cank′ery , affected with canker: ( Scot. ) crabbed. [L. cancer , a crab, gangrene.]