Definition of "heavyweight" in English

noun

1. A very large, heavy, or impressive person.

   • an intellectual heavyweight
   • Allen Gregory DeLongpre: Who's he? Patrick: He's only the most popular kid in school. Allen Gregory: Ah, the two heavyweights finally meet. Sure you're tired of all the buzz. Allen Gregory DeLongpre.

2. (uncountable, boxing) The professional boxing weight class for boxers weighing more than 190 pounds; a boxer in that division.

3. (uncountable, by extension) A similar division and contestant in other sports.

adjective

1. Of the heavyweight boxing (or similar) division.

2. Being relatively heavy.

3. Being a leader in one's field.

4. Important or impressive.