Premier (noun)

1. The head of government in some countries, such as the United Kingdom and Canada.
2. The chief minister of a state or province in some countries.
3. The first in rank, importance, or status.

Origin:

From old french premier ("first, chief"), from latin primarius ("first, chief"), from primus ("firs.t")

Examples:

1. The Prime Minister of Canada.
2. The Premier of Ontario.
3. The Premier League is the top professional football league in England.
4. He was the premier actor of his time.
5. She is the premier ballerina of the company.