1. (noun) one of three equal parts of a divisible whole

• one-third
• tierce

2. (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)

• third base

3. (noun) the third from the lowest forward ratio gear in the gear box of a motor vehicle

• third gear

4. (noun) the base that must be touched third by a base runner in baseball

• third base

5. (adjective) coming next after the second and just before the fourth in position

• 3rd
• tertiary

6. (adverb) in the third place

• thirdly

1. (noun) one of three equal parts of a divisible whole

• common fraction
• simple fraction

2. (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)

• position

3. (noun) following the second position in an ordering or series

• rank

4. (noun) the musical interval between one note and another three notes away from it

• interval
• musical interval

5. (noun) the third from the lowest forward ratio gear in the gear box of a motor vehicle

• gear
• gear mechanism

6. (noun) the base that must be touched third by a base runner in baseball

• bag
• base

1. (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)

• baseball team

1. (adjective) coming next after the second and just before the fourth in position

• ordinal