- A solution of continuity in any of the soft parts of the
body, discharging purulent matter, found on a surface, especially one
of the natural surfaces of the body, and originating generally in a
constitutional disorder; a sore discharging pus. It is distinguished
from an abscess, which has its beginning, at least, in the depth of the
- Fig.: Anything that festers and corrupts like an open sore;
a vice in character. - To ulcerate.