Definition of Corn

Corn: A small calloused area of skin caused by local pressure irritating tissue over a bony prominence. Corns most commonly occur over a toe where they form what is referred to as a hard corn. Between the toes, pressure can form a soft corn of macerated skin which often yellows.

The word corn comes from the Latin "cornu" meaning horn or hoof. A corn on the toe is also called a clavus.