Dictionary definition · heavyweight
noun
- an amateur boxer who weighs no more than 201 pounds
- a wrestler who weighs more than 214 pounds
- a professional boxer who weighs more than 190 pounds
- a very large person; impressive in size or qualities
- a person of exceptional importance and reputation
- A weight class division in combat sports, often the heaviest.
Source: Open English WordNet (CC BY 4.0).