trove
n. countablen. a collection of valuable or interesting things that someone has found. It is often used to describe a place where you can find many great items or pieces of information.
n. a collection of valuable or delightful items, often discovered or kept in a hidden place. Frequently used metaphorically to describe a rich source of information or high-quality material.
The old attic was a treasure trove of family history.
The newly opened digital archive provides a trove of primary source documents for historians studying the Victorian era.
While the physical gold was impressive, the real value lay in the trove of ancient manuscripts found alongside the coins, which offered a rare glimpse into lost languages.
Originally in the phrase treasure trove, from Anglo-Norman tresor trouvé (“found treasure”), where the past participle trouvé (“found”) was interpreted in English as a noun. Doublet of trope.
Commonly appears in the fixed phrase 'treasure trove', though it can function independently in modern journalistic writing.