Definition of "junior middleweight" []

• A weight division in professional boxing having an upper limit of 154 pounds (69.3 kilograms), between welterweight and middleweight. (noun)
• A boxer competing in this weight division. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.