{"era":"current","word":"cheeseburger","meaning":"a hamburger topped with cheese","children":[{"era":"pre-1100","word":"cheese","meaning":"the dairy food made from curdled milk","children":[],"language":"Old English"},{"era":"1900s","word":"hamburger","meaning":"a ground-beef sandwich named from Hamburg","children":[{"era":"medieval","word":"Hamburg","meaning":"the German city name behind hamburger","children":[],"language":"German"}],"language":"English"}],"language":"Modern English"}