Corn

What is Corn ?

Corn is (noun) 1. cereal plants such as wheat or barley a field of corn 2. maize, a cereal crop which is grown in many parts of the world 3. a hard painful lump of skin, usually on your foot, where something, such as a tight shoe, has rubbed it He has a corn on his little toe.

 

source: Easier English, Student Dictionary Upper Intermediate Level