Meaning & Definition of Canker in English

1. A fungal disease of woody plants that causes localized damage to the bark

2. An ulceration (especially of the lips or lining of the mouth)

3. 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"

1. Become infected with a canker

2. Infect with a canker