1. A series of actions advancing a principle or tending toward a particular end
   "he supported populist crusades";
   - campaign, cause, drive, movement, effort

1. 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
   "She is crusading for women's rights";
   - fight, press, campaign, push, agitate
    
2. Go on a crusade; fight a holy war
   "The knights crusaded against the infidels"

1. 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

Derived forms: crusaded, Crusades, crusading, crusades

Type of: advertise, advertize [US, non-standard], campaign, expedition, flack [N. Amer, informal], hostile expedition, military expedition, promote, push, take the field, venture

Encyclopedia: Crusade, Bull of the