Definition of "dum-dum" []

• Slang A stupid person; a dolt. (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.

• "Ballistics experts say the so-called dum-dum bullets also are lighter in weight and can be fired with greater accuracy over varying distances."
• "Ballistics experts say the so-called "dum-dum" bullets also are lighter in weight and can be fired with greater accuracy over varying distances."
• "A doctor treating victims told The Associated Press the gunman used illegal "dum-dum"-style bullets designed to disintegrate inside the body and cause maximum internal damage."