1cru·sade 
/kruˈseɪd/ noun
plural cru·sades /kruˈseɪd/ noun [count] 1 Crusade : any one of the wars that European Christian countries fought against Muslims in Palestine in the 11th, 12th, and 13th centuries — usually plural 2 : a major effort to change something — usually + for or against ▪ She has devoted herself to the crusade for equal rights for all people. ▪ a crusade [=campaign] against crime/pollution ▪ a politician conducting/waging a crusade against organized labor
