Hun: A member of a warlike ethnically-mixed Central Asian tribe of horsemen who invaded Europe in the 4th and 5th centuries. The Huns conquered much of Eastern and Southern Europe, and contributed to the downfall of the Roman Empire.
The Huns remained a distinct group in Europe through the early 8th century. The people of modern Hungary and Bulgaria believe that they are descended from the Huns.
"Attila was the greatest leader of the Huns in Europe; he even extracted tribute from the Roman Empire."