Major-league (adjective)

1. Being at the highest level of professional sports or other competitive activity.
2. Referring to a professional sports league that is considered to be the most prestigious or competitive.
3. Being of the highest standard or quality in a particular field or activity.

Origin:

The term "major-league" is a compound of the words "major" and "league" which refers to the highest level of professional sports or other competitive activity. the term is believed to have originated in the early 20th century, when professional sports began to be organized into leagues.

Examples:

1. He was a major-league baseball player.
2. The team was a major-league team, it was considered one of the best in the league.
3. He was a major-league chef, his restaurant was considered one of the best in the city.
4. She was a major-league tennis player, she had won several grand slams.
5. The company was a major-league player in the industry, it was one of the largest and most successful companies in the field.