Gangrene

n. death or rotting of body tissue (caused by faulty circulation, disease, etc.)

v. suffer from gangrene; cause gangrene

Gangrene is the necrosis and subsequent decay of body tissues caused by infection or thrombosis. It is usually the result of critically insufficient blood supply sometimes caused by injury and subsequent contamination with bacteria. This condition is most common in the extremities. The best treatment for gangrene is revascularization (restoration of blood flow) of the affected organ, which can reverse some of the effects of necrosis and allow healing. Depending on the extent of tissue loss and location, treatment other than revascularization may range from allowing digits to auto-amputate (fall off), debridement and local care, to amputation, the removal of infected necrotic tissues.
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Gangrene is the term used to describe the decay or death of an organ or tissue caused by a lack of blood supply. [more]Gangrene - Community and Resources

Noun
1. necrotic tissue; a mortified or gangrenous part or mass
(synonym) sphacelus, slough
(hypernym) pathology
(hyponym) dry gangrene, cold gangrene, mumification necrosis, mummification
(derivation) necrose, mortify, sphacelate
2. the localized death of living cells (as from infection or the interruption of blood supply)
(synonym) necrosis, mortification, sphacelus
(hypernym) death
(hyponym) myonecrosis
Verb
1. undergo necrosis; "the tissue around the wound necrosed"
(synonym) necrose, mortify, sphacelate
(hypernym) waste, rot
(derivation) sphacelus, slough

n. gangrene, death or rotting of body tissue (caused by faulty circulation, disease, etc.)

v. corrupt, spoil