crusade

In 1095, when Palestinian lands were held by Muslims, Pope Urban II exhorted Christians to reclaim the Holy Sepulchre and other venerated sites. Those who responded wore crosses of cloth on their breasts to identify themselves as soldiers in Christ’s army. Medieval French words for such holy wars were croisement, croiserie, croisée, and croisade, all derivatives of crois, meaning “cross.” In the 18th century, long after the crusades themselves had ceased, English borrowed both French croisade and the Spanish cruzado (likewise formed from a word meaning “cross”), blending the two to produce crusade.