| noun | one of three equal parts of a divisible whole “it contains approximately a third of the minimum daily requirement” |
| 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) “he is playing third” |
| noun | following the second position in an ordering or series “a distant third” |
| noun | the musical interval between one note and another three notes away from it “a simple harmony written in major thirds” |
| noun | 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” |
| noun | the base that must be touched third by a base runner in baseball “he was cut down on a close play at third” |
| adjective | coming next after the second and just before the fourth in position |
| adverb | in the third place “third we must consider unemployment” |