Meanings
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1
adj
heavier, thicker, or more substantial than average for its kind
The printer uses heavyweight paper for the report's cover.
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2
noun
a competitor in the heaviest or an unrestricted weight class, especially in boxing
The heavyweight defended his championship title in a twelve-round bout.
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3
noun
a person, organization, or thing with great power, prominence, influence, or ability
The conference attracted several heavyweights from the technology industry.
Thesaurus
Etymology
A compound of heavy + weight, first used for a person or thing above average weight and then for the highest weight classes in sport. The figurative sense extends physical weight to exceptional power, prominence, influence, or ability.