cor ‧ o ‧ ner /ˈkɒrənə $ ˈkɔːrənər, ˈkɑː-/ BrE AmE noun [countable]
[ Date: 1200-1300 ; Language: Anglo-French ; Origin: 'royal official' , from Old French corone ; ⇨ ↑ crown 1 ]
an official whose job is to discover the cause of someone’s death, especially if they died in a sudden or unusual way:
The coroner recorded a verdict of death by natural causes.
the coroner’s court