A painful cancerous sore in the coronet of a horse’s foot.
1609. Rowlands, Knaue of Clubbes, 44. For any Iade he phisicke had … Crowne-scab, and quitter-bone.
c. 1720. W. Gibson, Farrier’s Dispens., xiv. (1734), 276. Recommended to cure the Crown-Scab, being applied Plaister-wise all round the Coronet.
1792. Osbaldiston, Brit. Sportsman, 122/2. That there are a great many humours in the coronet, that may occasion the crown-scab, and other sores.
