abscess
(ˈæbsɛs, -sɪs) noun 1 a localized collection of pus formed as the product of inflammation and usually caused by bacteria
▷ verb 2 (intransitive) to form such a collection of pus
[C16: from Latin abscessus a going away, a throwing off of bad humours, hence an abscess, from abscēdere to go away]
> ˈabscessed adjective