Proper noun. Used to describe ones large, lifted, comfortable, gas guzzling SUV that is driven primarily in the backwoods. Synonym for Chevy Suburban/ GMC Yukon XL.
One corporate Suburbanite says to the other, while sipping his overpriced latte, "Check out the hick in that Montana Cadillac!" Both giggle as they wait for AAA to come pull their Audi/ BMW/ Mercedes out of a snow filled ditch