Third

1. n. The third part of the estate of a deceased husband, which, by some local laws, the widow is entitled to enjoy during her life.
2. a. Next after the second; coming after two others; — the ordinal of three; as, the third hour in the day.
3. a. Constituting or being one of three equal parts into which anything is divided; as, the third part of a day.
4. n. The quotient of a unit divided by three; one of three equal parts into which anything is divided.
5. n. The sixtieth part of a second of time.
6. n. The third tone of the scale; the mediant.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.