Third

Next after the second; coming after two others; -- the ordinal of three; as, the third hour in the day.

Constituting or being one of three equal parts into which anything is divided; as, the third part of a day.

The quotient of a unit divided by three; one of three equal parts into which anything is divided.

The sixtieth part of a second of time.

The third tone of the scale; the mediant.

The third part of the estate of a deceased husband, which, by some local laws, the widow is entitled to enjoy during her life.

one of three equal parts of a divisible whole; "it contains approximately a third of the minimum daily requirement"

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"