noun
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A plant disease marked by gradual decay.
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A region of dead plant tissue caused by such a disease.
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A worm or grub that destroys plant buds or leaves; cankerworm.
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A corroding or sloughing ulcer; especially a spreading gangrenous ulcer or collection of ulcers in or about the mouth.
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Anything which corrodes, corrupts, or destroys.
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A kind of wild rose; the dog rose.
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An obstinate and often incurable disease of a horse's foot, characterized by separation of the horny portion and the development of fungoid growths. Usually resulting from neglected thrush.
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An avian disease affecting doves, poultry, parrots and birds of prey, caused by Trichomonas gallinae.