| n. | 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. |
| 2. | Any enterprise undertaken with zeal and enthusiasm; | |
| 3. | A Portuguese coin. See Crusado. | |
| v. i. | 1. | To engage in a crusade; to attack in a zealous or hot-headed manner. |
| Noun | 1. | crusade - 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" |
| 2. | Crusade - any of the more or less continuous military expeditions in the 11-13th centuries when Christian powers of Europe tried to recapture the Holy Land from the Muslims | |
| Verb | 1. | crusade - 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" |
| 2. | crusade - go on a crusade; fight a holy war |