a fungal disease of woody plants that causes localized damage to the bark
an ulceration (especially of the lips or lining of the mouth)
[ Syn: canker sore ]
a pernicious and malign influence that is hard to get rid of; racism is a pestilence at the heart of the nation; according to him, I was the canker in their midst
[ Syn: pestilence ]
canker (n.)
become infected with a canker
infect with a canker