All 5 Uses of

crusade

in

The Hunchback of Notre Dame

Impossible to place our Cathedral in that other family of lofty, aerial churches, rich in painted windows and sculpture; pointed in form, bold in attitude; communal and bourgeois as political symbols; free, capricious, lawless, as a work of art; second transformation of architecture, no longer hieroglyphic, immovable and sacerdotal, but artistic, progressive, and popular, which begins at the return from the crusades, and ends with Louis IX.†
Chpt 1.3.1

Crusades = the more or less continuous military expeditions in the 11th to 13th centuries when Christian powers of Europe invaded Muslims in the Holy Land in the Middle East

It returns from the crusades with the pointed arch, like the nations with liberty.†
Chpt 1.5.2

This little cell had been celebrated in Paris for nearly three centuries, ever since Madame Rolande de la Tour-Roland, in mourning for her father who died in the Crusades, had caused it to be hollowed out in the wall of her own house, in order to immure herself there forever, keeping of all her palace only this lodging whose door was walled up, and whose window stood open, winter and summer, giving all the rest to the poor and to God.†
Chpt 1.6.2

The Saxon architect completed the erection of the first pillars of the nave, when the pointed arch, which dates from the Crusade, arrived and placed itself as a conqueror upon the large Romanesque capitals which should support only round arches.†
Chpt 1.3.1 *

Definitions:

(1) (crusade as in: a crusade against pollution)
a long and determined effort for a cause that is passionately believed to be important
(2) (Crusades as in: First Crusade to Jerusalem)
the more or less continuous military expeditions in the 11th to 13th centuries when Christian powers of Europe invaded Muslims in the Holy Land in the Middle East