Dictionary

sunset

/ˈsʌnˌsɛt/

noun

Definition
The time of day when the sun disappears below the western horizon.
    Definition
    The changes in color of the sky at sunset.
      Definition
      The final period of the life of a person or thing.
      one's sunset years
        Definition
        Having a set termination date.
        The tax increase legislation included a sunset clause requiring renewal to prevent the tax increase from expiring.
          Definition
          The region where the sun sets; the west.

            verb

            Definition
            To phase out.
            We'll be sunsetting version 1.9 of the software shortly after releasing version 2.0 next quarter.