#1 canker n. a fungal disease of woody plants that causes localized damage to the bark. wn
#2 canker v. become infected with a canker. wn
#3 canker n. [canker sore] an ulceration (especially of the lips or lining of the mouth). wn
#4 canker v. infect with a canker. wn
#5 canker n. [pestilence] 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". wn
vizzz