What is "dumdums"

Usage examples of "dumdums".

Cracking the cylinder, she found it fully loaded with homemade dumdums, and the ammo pouch on the belt held several reloads, both .

And the dumdums thinking they still looked buff or cool, not realizing they were just ancient: Embarrassing.

And all the dumdums were focused on Gar, except when they were sneering at the other prom-goers.