light machine gun

nounMilitary.

any air-cooled machine gun having a caliber not greater than 0.30 inch (7.6 millimeters).

Origin of light machine gun

First recorded in 1920–25

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

The robot is armed with a light machine gun and automatic grenade launcher.
Smoke Rings, Mystery Backpacks and Gun-Toting Robots: The Weird Wartech of the Korean Conflict | Kyle Mizokami | April 3, 2014 | THE DAILY BEAST
Another important innovation at this time was the introduction of the Lewis light machine gun.
The Fifth Leicestershire | J.D. Hills
Ferrati opened a chest built against the back of the seat and took out a light machine gun.
The Secret of the Ninth Planet | Donald Allen Wollheim
Desperate efforts were made to repair the line, but well-directed rifle and light machine-gun fire made this impracticable.
With the "Die-Hards" in Siberia | John Ward
Without its charge of water the machine weighed but 22 pounds and could be rated as a very light machine-gun.
Inventions of the Great War | A. Russell (Alexander Russell) Bond

Another type comprises a very light machine gun of rifle calibre, and this is intended for attachment to an ordinary motor car.
Aeroplanes and Dirigibles of War | Frederick A. Talbot

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