Source : WordNet®

Frederick II
     n 1: king of Prussia from 1740 to 1786; brought Prussia military
          prestige by winning the War of the Austrian Succession
          and the Seven Years' War (1712-1786) [syn: {Frederick
          the Great}]
     2: the Holy Roman Emperor who led the Sixth Crusade and crowned
        himself king of Jerusalem (1194-1250) [syn: {Holy Roman
        Emperor Frederick II}]