noun — the fielding position of the player on a baseball team who is stationed near the third of the bases in the infield (counting counterclockwise from home plate)
noun — the base that must be touched third by a base runner in baseball
noun — the third from the lowest forward ratio gear in the gear box of a motor vehicle
noun — the musical interval between one note and another three notes away from it
noun — one of three equal parts of a divisible whole
noun — following the second position in an ordering or series