Definitions

1. noun

A person who fights or advocates for a cause, especially a social or political one.

“The journalist became a crusader for transparency in government after uncovering a series of corruption scandals.”

2. noun

A knight or warrior who took part in the Crusades.

“The medieval historian studied the role of crusaders in the Holy Land during the 12th century.”

3. verb

To engage in a vigorous campaign or crusade, especially on behalf of a social or political cause.

“The activists are crusading for environmental protection, advocating for stricter regulations on pollution.”