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heavyweight definition

heavy·weight (hev′ē wāt′)

noun

  1. a person or animal weighing much more than average
  2. an athlete, in any of various sports, who is in the heaviest weight division or classification; specif., a boxer in the heaviest weight classification, typically weighing over 195 pounds (88.45 kg)
  3. ☆ Informal a very intelligent, influential, or important person

adjective

  1. heavy in weight
  2. of heavyweights

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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