Coroner (noun)

1. An official who investigates deaths that occur suddenly, unexpectedly, or violently.
2. An official who determines the cause of death in certain cases.

Origin:

From old french coronour "crowner" from latin coronator "crowner" from corona "crown".

Examples:

1. The coroner determined the cause of death was a heart attack.
2. The coroner conducted an autopsy to determine the cause of death.
3. The coroner's office was responsible for identifying the body.
4. The coroner's report concluded that the death was accidental.
5. The coroner testified at the trial.