C16: from Anglo-French tresor trové treasure found, from Old French tresortreasure + trover to find
treasure trove for learners of EnglishPowered by COBUILD
Word forms: treasure troves
1. countable noun [usu sing]
If you describe something or someone as a treasure trove of a particular thing, you mean that they are a very good or rich source of that thing. [+ of] ⇒ The dictionary is a vast treasure trove of information. ⇒ This Islington shop is a treasure trove of beautiful bridalwear.
2. countable noun [usu sing]
You can refer to a collection of valuable objects as a treasure trove. ⇒ Windsor Castle is quite literally an antique treasure trove. ⇒ The society's archives are a treasure trove for scholars.