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1. The base that must be touched third by a base runner in baseball
   "he was cut down on a close play at third base"
   - third
    
2. 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)
   "he is playing third base"
   - third

Derived forms: third bases

Type of: bag, base, position

Part of: baseball team

Encyclopedia: Third base