com·mis·sion·er 
/kəˈmɪʃənɚ/ noun
plural com·mis·sion·ers /kəˈmɪʃənɚ/ noun [count] 1 : a member of a commission : one of a group of people who have been given the official job of finding information about something or controlling something
▪ the city's library commissioners 2 : an official who is in charge of a government department or part of a government department
▪ the mental health commissioner ▪ the police commissioner 3 US : an official who is in charge of a major professional sport (such as baseball, football, or hockey)
▪ The baseball commissioner decided to suspend the players for 10 games.
▪ the city's library commissioners
▪ the mental health commissioner ▪ the police commissioner
▪ The baseball commissioner decided to suspend the players for 10 games.
