heir·loom 
/ˈeɚˌlu:m/ noun
plural heir·looms /ˈeɚˌlu:m/ noun [count] 1 : a valuable object that is owned by a family for many years and passed from one generation to another
▪ a priceless family heirloom 2 US : an old type of plant that is still available because individual people have continued to grow it for many years — usually used before another noun ▪ heirloom tomatoes ▪ heirloom roses
▪ a priceless family heirloom
