|  | 
Definition of W. K. Kellogg
1. Noun. United States food manufacturer who (with his brother) developed a breakfast cereal of crisp flakes of rolled and toasted wheat and corn; he established a company to manufacture the cereal (1860-1951). 
|  | 
1. Noun. United States food manufacturer who (with his brother) developed a breakfast cereal of crisp flakes of rolled and toasted wheat and corn; he established a company to manufacture the cereal (1860-1951).