1chief 
/ˈtʃi:f/ noun
plural chiefs /ˈtʃi:f/ noun [count] : the person who is the leader of a group of people, of an organization, etc.
▪ She's the chief of surgery [=the doctor who is in charge of the surgical department] at the hospital. ▪ the police chief = the chief of police ▪ the fire chief [=the head of a department of firefighters] ▪ an Indian chief [=the leader of a tribe of Native Americans]
▪ She's the chief of surgery [=the doctor who is in charge of the surgical department] at the hospital. ▪ the police chief = the chief of police ▪ the fire chief [=the head of a department of firefighters] ▪ an Indian chief [=the leader of a tribe of Native Americans]
