crusade

Noun

• 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

• 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
    

Verb

• go on a crusade; fight a holy war

• 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
    

Related words

• Synonyms: 
  Crusade , campaign , cause , drive , movement , effort , fight , press , push , agitate