Dictionary definition · canker
noun
- a fungal disease of woody plants that causes localized damage to the bark
- an ulceration (especially of the lips or lining of the mouth)
- a pernicious and malign influence that is hard to get rid of"racism is a pestilence at the heart of the nation"
verb
- become infected with a canker
- infect with a canker
Similar words
Source: Open English WordNet (CC BY 4.0).