The word "Big Mac" was originally the name of a big hamburger introduced by McDonald's fast food restaurant, which means "giant overlord". Later, this word gradually became widely used to describe anything super-large or super-powerful people.

In the commercial field, Big Mac usually refers to enterprises or brands with absolute market share, such as technology giants such as Apple and Google. In the field of sports, Big Mac can refer to those athletes or teams with super strength and influence, such as Jordan, LeBron James and Barcelona Football Club.

In addition, in politics, culture and other fields, Big Mac can also be used to describe organizations or figures with strong influence and control, such as the President of the United States, the United Nations, Facebook and so on.

In a word, the word "Big Mac" has a wide meaning, and it is often used to describe those super-large and super-large things or people, with strong visual impact and symbolic significance.