Hob″nail′ (?), n. [1st hob + nail.] 1. A short, sharp-pointed, large-headed nail; — used in shoeing houses and for studding the soles of heavy shoes.
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.