/ ˈkɒrənə(r); NAmE ˈkɔːr-/ noun
an official whose job is to discover the cause of any sudden, violent or suspicious death by holding an inquest
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WORD ORIGIN
Middle English : from Anglo-Norman French coruner , from corune a crown, coruner (verb), Old French corone (noun), coroner (verb), from Latin corona wreath, chaplet; reflecting the Latin title custos placitorum coronae guardian of the pleas of the Crown.