third base noun
[singular] baseball : the base that must be touched third by a base runner
▪ a runner on third base ; also : the position of the player who defends the area near third base
▪ She plays third base. — compare first base, home plate, second base
▪ a runner on third base ; also : the position of the player who defends the area near third base
▪ She plays third base. — compare first base, home plate, second base
