Definitions

1. noun

the most senior or highest-ranking person in a particular field, organization, or group

“The chief of police was responsible for maintaining law and order in the city.”

2. noun

a person in charge of a particular activity or department

“The chief executive officer was in charge of the company’s financial decisions.”

3. adjective

most important or central

“The chief concern of the project was to reduce carbon emissions.”

4. adverb

as a chief or principal

“The chief speaker at the conference was a renowned expert in the field.”