tommy gun 
noun informal
A type of sub-machine gun.Meanwhile our heroes have a couple of handguns and a tommy gun....
- Capone's usual partner was Jack McGurn, a sleek, handsome virtuoso of the tommy gun, architect of the St. Valentine's Day shootings.
- In one of the film's most famous scenes, Camonte secures a tommy gun from a now dead, would-be assassin and, with the joy and fascination of a child at Christmas, tries out his new toy.
Origin
1920s: contraction of Thompson gun, named by its designer after John T. Thompson (1860–1940), the American army officer who conceived the idea for it.
- run a mile
- run-and-gun
- run-and-shoot
- run an errand
- runanga
- runaround
- run around with (also run with)
- run at
- run a temperature
- runathon
- run-a-thon
- run a tight ship
- run away
- runaway
- runaway knock
- runaway reaction
- runaway ring
- runaway selection
- runaway star
- runaway switch
- runaway train
- run away with
- runback
- run before one can walk
- run blocker