Read the dictionary definition of cereal. All definitions for this word.
1. a breakfast food prepared from grain
2. foodstuff prepared from the starchy grains of cereal grasses
3. grass whose starchy grains are used as food: wheat; rice; rye; oats; maize; buckwheat; millet
4. made of grain or relating to grain or the plants that produce it
1. a cereal beverage
2. cereal grasses