IPA: //ˈbɪstʊəri//
KK: /ˈbɪstəˌri/
A long and thin surgical knife used for making small cuts in the skin or other tissues during medical procedures.
The surgeon used a bistoury to make precise incisions during the operation.
Bistoury → The word comes from the French *bistouri*, which is derived from the Latin *bisturia*, meaning a small surgical knife. The term refers specifically to a small, pointed surgical instrument used for making incisions.
Think of a small surgical knife ('bisturia' in Latin) when you remember that a bistoury is a precise tool used in surgery.