Inflamed swelling (4)
'inflamed swelling' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for abscess that I've seen before include "Inflamed infected area" , "Swollen and pus-filled cavity" , "Pus-filled swelling" , "Inflamed swelling" , "Himalayan wild goat; hart (anag.)" .)
'inflamed swelling' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for boil that I've seen before include "Cook, swelling" , "Sore with a hard core filled with pus" , "Cook in hot water" , "Abscess" , "become inflamed" .)