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1. often Crusade Any of the military expeditions undertaken by European Christians in the 11th, 12th, and 13th centuries to recover control of the Holy Land from the Muslims.
2. A holy war undertaken with papal sanction.
3. A concerted effort or vigorous movement for a cause or against an abuse: a crusade for literacy; a crusade against drunk driving.
intr.v. cru·sad·ed, cru·sad·ing, cru·sades
To engage in a crusade.

[French croisade and Spanish cruzada, both ultimately from Latin crux, cruc-, cross.]

cru·sad′er n.


(Government, Politics & Diplomacy) campaigning: a crusading lawyer.


[kruːˈseɪdɪŋ] adj [journalist, lawyer, newspaper] → militant(e)
References in classic literature ?
The Assistant Commissioner laughed a little; but the great man's thoughts seemed to have wandered far away, perhaps to the questions of his country's domestic policy, the battle-ground of his crusading valour against the paynim Cheeseman.
The Heralds' College found out a Crusading ancestor for Veneering who bore a camel on his shield (or might have done it if he had thought of it), and a caravan of camels take charge of the fruits and flowers and candles, and kneel down be loaded with the salt.
The 18 papers in the proceedings consider such topics as the geo-strategies and historical perspectives of Pope Urban II and 'Ali ibn Tahir al-Sulami, the impact of crusading ideology on early 12th-century Denmark, the rationality behind Manuel I Domnenos' attempt to reform the abjuration formula for converts from Islam, the Armenian kingdom and the Mongol-Frankish encounter, and Baybars and the crusades in Arab film and television.
Malcolm Barber's new book, The Crusader States, is the most recent addition to the recent flowering in the study of the crusades, crusading, and the "crusader" states.
Jonathan Phillips is Professor of Crusading History at Royal Holloway in London University.
The crusading order of the Knights Templar is an essential part of every conspiracy theorist's playbook, and if you're looking for a mythical relic of the Christian past (the Spear of Destiny, the Holy Grail, the True Cross), chances are it fell into the hands of a (fictional) crusader.
Crusading Spirituality in the Holy Land and Iberia, c.
What makes Tyerman's work stand out is the extent of his knowledge of the entire crusading era and his ability to deploy that knowledge in a clear, concise, and generally readable manner in the course of a single (if massive) volume.
Clifford is about four men separated in time but united in their ambitions to possess the Ides of March coin minted by Brutus in celebration of Julius Caesar's death: Marcus Brutus himself, a crusading knight of medieval Europe, an SS lieutenant of Hitler's, and a modern day Wall Street trader.
Other contemporary Christians in Europe are more skeptical and they think that the crusading enterprise was flawed by human ambition and greed.
I realized with shame that in my work for reconciliation among my people in Nagaland, I had gone quite far in crusading against the devil in others and received applause and public recognition for this.