chairman

noun
B2
1
B2
the person in charge of a meeting, who tells people when they can speak, etc.
رئیس جلسه, مدیر جلسه, مسئول جلسه
2
B2
the person in charge of a committee, a company, etc.
رئیس, رئیس هیئت مدیره, رئیس کمیته
the vice/deputy chairman
the committee/board/party/club chairman
the chairman of the committee/board/party/club
the executive chairman
He then served as chairman of the Civil Aviation Authority.
The chairman of the company presented the annual report.
He became chairman and CEO of the corporation.