third base

third base

noun

baseball : the base that must be touched third by a base runner; also : the position of the player who defends the area near third base

Full Definition of THIRD BASE

1

:  the base that must be touched third by a base runner in baseball

2

:  the player position for defending the area around third base

— third baseman noun

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Examples of THIRD BASE

1. a runner on third base

First Known Use of THIRD BASE

1845