[ noun ] a German noble family that ruled Brandenburg and Prussia <noun.group>
It was the seat of power of the Hohenzollern family, which ruled Prussia before World War I. It was where word was flashed to Harry Truman that the atom bomb had been successfully tested in the New Mexico desert.
At one point, the crowd began chanting "Long live King Michael," referring to the Hohenzollern monarch, forced to abdicate by the Communists in 1946.