Dictionary.com
Thesaurus.com

parabellum

American  
[per-uh-bel-uhm] / ˌpɛr əˈbɛl əm /

noun

  1. Trademark. a type of German-made machine gun used in World War I.

  2. Trademark. a type of German-made pistol; Luger.

  3. any one of several types of handgun cartridge.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.