- a gangrenous or ulcerous sore, especially in the mouth.
- a disease affecting horses' feet, usually the soles, characterized by a foul-smelling exudate.
- a defined area of diseased tissue, especially in woody stems.
- something that corrodes, corrupts, destroys, or irritates.
- dog rose.
- to infect with canker.
- to corrupt; destroy slowly.
- to become infected with or as if with canker.
- an ulceration, esp of the lips or lining of the oral cavity
- vet science
- a disease of horses in which the horn of the hoofs becomes soft and spongy
- an inflammation of the lining of the external ear, esp in dogs and cats, resulting in a discharge and sometimes ulceration
- ulceration or abscess of the mouth, eyelids, ears, or cloaca of birds
- an open wound in the stem of a tree or shrub, caused by injury or parasites
- something evil that spreads and corrupts
- to infect or become infected with or as if with canker
