An open sore of the skin, eyes or mucous membrane, often caused by an initial abrasion and generally maintained by an inflammation and/or an infection.
Peptic ulcer.
Anything that festers and corrupts like an open sore; a vice in character.
A small raised swelling on the skin, often itchy, caused by a blow from a whip or an insect bite etc.
A mine.
Synonym of wale.