(a) A cancer, carcinoma; also, an ulcerated non-malignant tumor, a spreading ulcer; (b) ulceration of a wound, gangrene in a wound or ulcer; (c) a sore in the mouth, ?canker sores; ?also, an abscess……

Gangrenous ulcers of the leg [ = cancrene]. …

Eaten by cancer, cancerous. …