noun, often attributive
heavy·weight | \ˈhe-vē-ˌwāt \

Definition of heavyweight 

1 : one that is above average in weight

2 : one in the usually heaviest class of contestants: such as

a : a boxer in an unlimited weight division — compare light heavyweight

b : a weight lifter weighing more than 198 pounds

3 : one that possesses great power, prominence, or stature

Keep scrolling for more

Examples of heavyweight in a Sentence

Their company is one of the industry's heavyweights. a heavyweight in the U.S. Senate, he has a lot of clout in judicial confirmations

Recent Examples on the Web

My workouts are all part dance cardio and part muscle work, from light 3-pound weights and barre work, all the way up to to taking my clients to the gym for heavy weight training. Leah Prinzivalli, SELF, "5 Celebrity Trainers Explain How They Got Their First Famous Clients," 30 June 2018 Cespedes’s heavy weight lifting regimen and lack of run training, stretching and hydration were blamed for his past leg injuries. James Wagner, New York Times, "The Mets Are Missing Two Big Things: Wins and Yoenis Cespedes," 7 July 2018 Both Bruno and Murdock advise working your way up to this move instead of jumping right in with the heaviest weight off the rack. Leah Prinzivalli, SELF, "Why Kate Upton’s Twist on Hip Thrusts Is a Great Butt-Strengthening Move," 7 Mar. 2018 Until management finally traded Rose to the Knicks in June 2016, his past — the almost-too-good-to-be-true ascension, the no-brainer contract extension, the ensuing knee surgeries — saddled the franchise with a heavy weight. K.c. Johnson, chicagotribune.com, "20 years since dissolution of the dynasty, Bulls still a long way from the top," 10 June 2018 Place in refrigerator, put a heavy weight such as a cast-iron pan on the sub and let rest overnight. Adina Steiman, WSJ, "A Cookbook Packed With Red-Blooded Vegetarian Fare," 31 May 2018 But with the crown comes the heavy weight of responsibility. Jim Ayello, Indianapolis Star, "Power's surge, Hinchcliffe's return, clarity on Alonso as IndyCar heads to Detroit," 31 May 2018 Define your terms Muscle strength comes from lifting heavy weights, with sets typically in the six- to ten-rep range. Boris Abrams, GQ, "How to Take Better Nudes," 17 May 2018 Squats and dead lifts were her primary focus, with an emphasis on heavier weights. Dave Melton, Post-Tribune, "A rise from Shine: junior sprinter Adeyah Shine sparks host Munster at Ed Woodrick Invitational," 28 Apr. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'heavyweight.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of heavyweight

1857, in the meaning defined at sense 1

Keep scrolling for more

Learn More about heavyweight

Share heavyweight

Statistics for heavyweight

Last Updated

16 Sep 2018

Look-up Popularity

Time Traveler for heavyweight

The first known use of heavyweight was in 1857

See more words from the same year

Keep scrolling for more

More Definitions for heavyweight



English Language Learners Definition of heavyweight

: a fighter in the heaviest class of boxers : a boxer who weighs more than 175 pounds (79.5 kilograms)

: someone or something that is very important and powerful

: something that is heavy

Keep scrolling for more

Comments on heavyweight

What made you want to look up heavyweight? Please tell us where you read or heard it (including the quote, if possible).


lying above or upon

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Roman Mythology Quiz

  • the-triumph-of-venus-by-alessandro-magnasco
  • Boreal comes from the name of the ancient Greek god of which wind?
True or False

Test your knowledge - and maybe learn something along the way.


Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!