crusade Definition

crusade
noun

1. A strenuous campaign in aid of a cause.

Thesaurus: campaign, expedition, undertaking, cause, movement, holy war, jihad.
2. historical
Any of the eight Holy Wars from 1096 onwards, which were fought to recover the Holy Land from the Muslims.
Form: Crusades

verb

intr
crusaded, crusading
1. To engage in a crusade; to campaign.

Derivative: crusader
noun

A person who campaigns vigorously in aid of a cause
Thesaurus: reformer, campaigner, missionary, champion, zealot, enthusiast, advocate, fighter.

Etymology: 16c: from French croisade, ultimately from Latin crux cross.