Main entry: relief pitcher, reliever, fireman
Definition: a pitcher who does not start the game
Main entry: reliever, comforter, allayer
Definition: a person who reduces the intensity (e.g., of fears) and calms and pacifies
Usage: a reliever of anxiety; an allayer of fears
Main entry: stand-in, substitute, relief, reliever, backup, backup man, fill-in
Definition: someone who takes the place of another (as when things get dangerous or difficult)
Usage: the star had a stand-in for dangerous scenes; we need extra employees for summer fill-ins