noun
1. son of Frederick William who in 1701 became the first king of Prussia (1657-1713)
• Instance Hypernyms: ↑king, ↑male monarch, ↑Rex
• Member Holonyms: ↑Hohenzollern
2. Holy Roman Emperor from 1152 to 1190; conceded supremacy to the pope; drowned leading the Third Crusade (1123-1190)
• Syn: ↑Frederick Barbarossa, ↑Barbarossa
• Instance Hypernyms: ↑Holy Roman Emperor
Useful english dictionary. 2012.