WordNet (r) 3.0 (2006):
Barbarossa n 1: Holy Roman Emperor from 1152 to 1190; conceded supremacy to the pope; drowned leading the Third Crusade (1123-1190) [syn: Frederick I, Frederick Barbarossa, Barbarossa] 2: Barbary pirate (died in 1546) [syn: Barbarossa, Khayr ad- Din]