Simple Definition of canker

from our Learner's Dictionary

canker

noun

ˈkæŋkɚ

plural cankers

1

: something that causes bad things to happen

—usually singular

Poverty is the canker of this neighborhood.

2

: any of various plant diseases

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“Canker.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/canker. Accessed 22 Jun. 2026.

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