1. Somebody or something that is particularly small-town, sometimes characteristically small-minded or with a minimal world scope. 2. Somebody or something that relates to typically classic American traditions such as BBQing over a trash can in your backyard or making a tire swing.
Person 1: "My dad owns a family business that I inherit when I graduate from college."
Person 2: "That's so down home!"
"Henry wore overalls to school today and packed grits for lunch. That's, like, really down home."
When your entire family eats dinner together every night without fail.
Living on a farm.