heirloom

/EH1 R L UW0 M/
noun
  1. 1

    A valued possession that has been passed down through the generations.

  2. 2

    An old crop variety that has been passed down through generations of farmers by seed saving and cultivation, in contrast to modern cultivars used in large-scale agriculture.

Synonyms

Source: https://en.wiktionary.org/wiki/heirloom