1.  crusade(n = noun.act) campaign, cause, drive, effort, movement - a series of actions advancing a principle or tending toward a particular end; "he supported populist campaigns"; "they worked in the cause of world peace"; "the team was ready for a drive toward the pennant"; "the movement to end slavery"; "contributed to the war effort"
is a kind of venture
has particulars: ad blitz, ad campaign, advertising campaign, anti-war movement, charm campaign, consumerism, campaigning, candidacy, candidature, electioneering, political campaign, fund-raising campaign, fund-raising drive, fund-raising effort, feminism, feminist movement, women's lib, women's liberation movement, gay lib, gay liberation movement, lost cause, reform, war, youth crusade, youth movement
Derived form verb crusade₁

2.  crusade(n = noun.act) - any of the more or less continuous military expeditions in the 11th to 13th centuries when Christian powers of Europe tried to recapture the Holy Land from the Muslims;
is a kind of expedition, hostile expedition, military expedition
has particulars: first crusade, second crusade, third crusade, fourth crusade, fifth crusade, sixth crusade, seventh crusade
Derived form verb crusade₂

1.  crusade(v = verb.social) agitate, campaign, fight, press, push - exert oneself continuously, vigorously, or obtrusively to gain an end or engage in a crusade for a certain cause or person; be an advocate for; "The liberal party pushed for reforms"; "She is crusading for women's rights"; "The Dean is pushing for his favorite candidate"
is one way to advertise, advertize, promote, push
Derived forms noun crusade₁, noun crusader₁
Sample sentences: Somebody ----s something; Somebody ----s somebody

2.  crusade(v = verb.competition) - go on a crusade; fight a holy war;
is one way to campaign, take the field
Derived forms noun crusade₂, noun crusader₂
Sample sentences: Somebody ----s; Somebody ----s PP

1.  Any one of the military expeditions undertaken by Christian powers, in the 11th, 12th, and 13th centuries, for the recovery of the Holy Land from the Mohammedans. [1913 Webster]

2.  Any enterprise undertaken with zeal and enthusiasm; as, a crusade against intemperance. [1913 Webster]

3.  A Portuguese coin. See Crusado. [1913 Webster]

   To engage in a crusade; to attack in a zealous or hot-headed manner. M. Green. [1913 Webster]

crusade, n. & v.
--n.
1 a any of several medieval military expeditions made by Europeans to recover the Holy Land from the Muslims. b a war instigated by the Church for alleged religious ends.
2 a vigorous campaign in favour of a cause.
--v.intr. engage in a crusade.

Derivative:
crusader n.

Etymology:
earlier croisade (F f. croix cross) or crusado (Sp. f. cruz cross)

N  warfare, fighting, hostilities, war, arms, the sword, Mars, Bellona, grim visaged war, horrida bella, bloodshed, appeal to arms, appeal to the sword, ordeal of battle, wager of battle, ultima ratio regum, arbitrament of the sword, battle array, campaign, crusade, expedition, operations, mobilization, state of siege, battlefield, theater of operations, warpath, art of war, tactics, strategy, castrametation, generalship, soldiership, logistics, military evolutions, ballistics, gunnery, chivalry, gunpowder, shot, battle, tug of war, service, campaigning, active service, tented field, kriegspiel, Kriegsspiel, fire cross, trumpet, clarion, bugle, pibroch, slogan, war-cry, war-whoop, battle cry, beat of drum, rappel, tom-tom, calumet of war, word of command, password, watchword, passage d-armes, war to the death, war to the knife, guerre a mort, guerre a outrance, open war, internecine war, civil war, contending, contentious, armed, armed to the teeth, armed cap-a-pie, sword in hand, in arms, under arms, up in arms, at war with, bristling with arms, in battle array, in open arms, in the field, embattled, battled, unpacific, unpeaceful, belligerent, combative, armigerous, bellicose, martial, warlike, military, militant, soldier-like, soldierly, chivalrous, strategical, internecine, flagrante bello, in the thick of the fray, in the cannon's mouth, at the sword's point, at the point of the bayonet, Int, vae victis!, to arms!, to your tents O Israel!, the battle rages, a la guerre comme a la guerre, bis peccare in bello non licet, jus gladii, my voice is still for war, 'tis well that war is so terrible, otherwise we might grow fond of it, my sentence is for open war, pride, pomp, and circumstance of glorious war, the cannons have their bowels full of wrath, the cannons aspit forth their iron indignation, the fire-eyed maid of smoky war, silent leges inter arma, si vis pacem para bellum.

fifth crusade, first crusade, fourth crusade, second crusade, seventh crusade, sixth crusade, third crusade, youth crusade