" Hence, the notion of the “cheese burger” by the late 1930s, with “burger” now referring to a disk of meat. Today, of course, one speaks of the veggie burger, taco burger, fish burger, and so much else, such that no one would object that burger is “not a word.” Now it is, but only because of grafting. We talk about eating a nice burger, and Abraham Lincoln brought back to life would picture us trying to consume a staid, small-town German tradesman. "

― John McWhorter , Words on the Move: Why English Won't—and Can't—Sit Still (Like, Literally)