English edit

 

Etymology edit

From Mike (the letter M in the ICAO spelling alphabet).

Pronunciation edit

  • (file)

Noun edit

40 mike-mike

  1. (US Army and Marines, military, slang) Any weapon firing a 40mm grenade. Often specifically the M203 grenade launcher, mounted underneath an M-16 or variant. In the Marine Corps, often the Mark-19 Automatic 40mm Grenade Launcher.