Adjective heavyweight has 1 sense
- heavyweight - heaviest in a category or of a heavyweight category (more than 190 pounds for prizefighters); "a heavyweight boxer"
Antonym: light (indirect, via heavy)
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Noun heavyweight has 5 senses
- heavyweight - an amateur boxer who weighs no more than 201 pounds
--1 is a kind of boxer, pugilist
- heavyweight - a wrestler who weighs more than 214 pounds
--2 is a kind of wrestler, grappler, matman
- heavyweight - a professional boxer who weighs more than 190 pounds
--3 is a kind of prizefighter, gladiator
- giant, hulk, heavyweight, whale - a very large person; impressive in size or qualities
--4 is a kind of large person
- colossus, behemoth, giant, heavyweight, titan - a person of exceptional importance and reputation
--5 is a kind of important person, influential person, personage
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