ab ‧ scess /ˈæbses/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Language: Latin ; Origin: abscessus 'act of going away, abscess' , from abscedere , from abs- 'away' + cedere 'to go' ]
a painful swollen part of your skin or inside your body that has become infected and is full of a yellowish liquid