An ulceration (especially of the lips or lining of the mouth)
English: canker, canker sore
cankerEnglish
canker, canker sore, pestilence
Noun
A fungal disease of woody plants that causes localized damage to the bark
English: canker
A pernicious and malign influence that is hard to get rid of
English: pestilence, canker
Verb
Become infected with a canker
English: canker
Infect with a canker
English: canker