- a person or thing that heals wounds, cures illness, restores health, or otherwise makes well and whole.
- faith healer.
- (in a video game) a category of job classes in a role-playing game, tasked with restoring the health of other player characters in a party, but poorly equipped to either withstand damage from an enemy or deal damage to an enemy: Healers are essential to any raiding party, but Priest and even Shaman jobs are hard to solo in the early levels.