Corn

1. Tall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varieties; the principal cereal in Mexico and Central and South America since pre-Columbian times.
2. The dried grains or kernels or corn used as animal feed or ground for meal.
3. Ears of corn grown for human food.
4. A hard thickening of the skin (especially on the top or sides of the toes) caused by the pressure of ill-fitting shoes.

Shown are ears of corn.