A kind of chili at
Skyline, a chili chain in Ohio, Kentucky, Indiana, Michigan, and Florida.
They also have a
3-way and a
5-way.
A 4-way chili is spaghetti topped with
Skyline chili, cheese, and diced onions or
red beans. In other words it's a
3-way chili with onions or beans.
I'm here at college from IN. You can imagine the amusement and confusion that went down when I heard about the "famous 3-way".