HOBNAIL

hobnail. Hobnail, n. a broad nail used for shoes

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Hob″nail′ (?), n. [[1st hob + nail.]] 1. 1. A short, sharp-pointed, large-headed nail; — used in shoeing houses and for studding the soles of heavy shoes.
2. 2. A clownish person; a rustic. Milton.
Hobnail liver (Med.), a disease in which the liver is shrunken, hard, and covered with projections like hobnails; one of the forms of cirrhosis of the liver.