crusader

Noun crusader has 2 senses

• crusader(n = noun.person) meliorist, reformer, reformist, social reformer - a disputant who advocates reform;
is a kind of controversialist, disputant, eristic
has particulars: abolitionist, emancipationist, birth-control campaigner, birth-control reformer, chartist, civil rights activist, civil rights leader, civil rights worker, demonstrator, protester, dry, prohibitionist, conservationist, environmentalist, feminist, libber, women's liberationist, women's rightist, flower child, hippie, hippy, hipster, freedom fighter, insurgent, insurrectionist, rebel, activist, militant, non-resistant, passive resister, preservationist, utopian, anthony comstock, comstock, dix, dorothea dix, dorothea lynde dix, hus, huss, jan hus, john huss, owen, robert owen, girolamo savonarola, savonarola, francis everett townsend, townsend, john wilkes, wilkes
Derived form verb crusade₁

• crusader(n = noun.person) - a warrior who engages in a holy war; "the Crusaders tried to recapture the Holy Land from the Muslims"
is a kind of warrior
Derived form verb crusade₂