Medical Definition of canker
2a: a chronic inflammation of the ear in dogs, cats, or rabbits; especially : a localized form of mangeb: a chronic and progressive inflammation of the deep horn-producing tissues of the frog and sole of the hooves of horses resulting in softening and destruction of the horny layers
Seen and Heard
What made you want to look up canker? Please tell us where you read or heard it (including the quote, if possible).