| Noun | 1. | third - one of three equal parts of a divisible whole; "it contains approximately a third of the minimum daily requirement" |
| 2. | third - the fielding position of the player on a baseball team who is stationed near 3rd base; "he is playing third" Synonyms: third base | |
| 3. | third - following the second position in an ordering or series; "a distant third"; "he answered the first question willingly, the second reluctantly, and the third with resentment" | |
| 4. | third - the musical interval between one note and another three notes away from it; "a simple harmony written in major thirds" | |
| 5. | third - the third from the lowest forward ratio gear in the gear box of a motor vehicle; "you shouldn't try to start in third gear" Synonyms: third gear | |
| 6. | third - the base that must be touched third by a base runner in baseball; "he was cut down on a close play at third" Synonyms: third base | |
| Adj. | 1. | third - coming next after the second and just before the fourth in position |
| 2. | third - being one of three equal parts; "a third share of the money" | |
| Adv. | 1. | third - in the third place; "third we must consider unemployment" Synonyms: thirdly |