Definition of "lightweight" []

• One that weighs relatively little or less than average. (noun)
• A weight division in professional boxing having an upper limit of 135 pounds (60.7 kilograms), between junior lightweight and junior welterweight. (noun)
• A boxer competing in this weight division. (noun)
• A similar weight division in other sports, such as weightlifting. (noun)
• A contestant 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.

• "Embarrassingly amateurish, he gives new meaning to the term lightweight, and it has nothing to do with his character's ability to float on air."
• "I've written about what I call the lightweight myth."
• "We have what we call a lightweight tank and a super lightweight tank."