Frederick I fre·de·ricki uncommon noun 1. son of Frederick William who in 1701 became the first king of Prussia (1657-1713) SynonymsFrederick I 2. Holy Roman Emperor from 1152 to 1190; conceded supremacy to the pope; drowned leading the Third Crusade (1123-1190) SynonymsFrederick IFrederick BarbarossaBarbarossa Related words Word family Frederick II Broader terms Holy Roman Emperorking Parts Hohenzollern WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.
