commissioner

 
Pronunciation: /kəˈmɪʃ(ə)nə/

noun

  • a person appointed to a role on or by a commission.
  • a representative of the supreme authority in an area.
  • the head of the Metropolitan Police in London.
  • North American a person appointed to regulate a particular sport: a baseball commissioner

Origin:

late Middle English: from medieval Latin commissionarius, from Latin commissio (see commission)