Abscess n. : A collection of pus or purulent matter in any tissue or organ of the body, the result of a morbid process.

Example:
How do I know when an Abscess on my gum is healing?

Taxonomy
abscess, antibiotics, closure, tissue, pus, Treatment, cavity, Incision and drainage, patients, baths, mupirocin ointment, Packing, Magnesium sulfate, curettage, cutaneous abscesses, free encyclopedia, paste, wound.

Defination from the web:
abscess in Wiktionary, the free dictionary. An abscess (Latin: abscessus) is a collection of pus (dead neutrophils) that has accumulated ... Major complications are spreading of the abscess material to adjacent or remote tissues and extensive regional tissue death (gangrene) ...