relief pitcher
noun
,
Baseball.
1.
a pitcher brought into a game to replace another pitcher, often in a critical situation.
2.
a pitcher regularly so used, as opposed to one who regularly starts games.
Also called
reliever
,
reliefer
.
Origin
1945-50
British Dictionary definitions for
relief pitcher
relief pitcher
noun
1.
(
baseball
) a pitcher who replaces a side's main pitcher during a game
Also called
reliever