1. [ noun ] (politics) 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)
Synonyms: Frederick_the_Great
Related terms: king
2. [ noun ] (politics) Holy Roman Emperor; led the Sixth Crusade and crowned himself king of Jerusalem (1194-1250)
Synonyms: holy_roman_emperor_frederick_ii
Related terms: Holy_Roman_Emperor
Similar spelling:   Frederick_I