1. a person who is the leader of a group or organization

1. most important; main; primary

Examples

• The fire chief arrived at the scene within minutes.
• She was appointed chief of the medical staff.
• The tribal chief welcomed the visitors to their land.
• What is your chief concern about this project?
• The chief reason for the delay was bad weather.
• Safety is our chief priority.
• The chief executive will address the shareholders tomorrow.