1. One of above average weight.
2. 1. The heaviest weight division in professional boxing, having no upper limit, with contestants usually weighing more than 190 pounds (85.5 kilograms).
   2. A boxer competing in this weight division.
   3. A similar weight division in other sports, such as weightlifting.
   4. A contestant in this weight division.
3. Informal. A person of great importance or influence.

The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.