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