treasure trove

/ˌtrɛʒər ˈtroʊv/

Other forms: treasure troves

Definitions of treasure trove

1. noun

   any collection of valuables that is discovered
   “her book was a treasure trove of new ideas”

   “mother's attic was a treasure trove when we were looking for antiques”

   type of:

   accumulation, aggregation, assemblage, collection

   several things grouped together or considered as a whole
2. noun

   treasure of unknown ownership found hidden (usually in the earth)
   synonyms: trove

   type of:

   hoarded wealth, treasure

   accumulated wealth in the form of money or jewels etc.