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Tommy gun

Tommy gun

2 8.2
A short, powerful automatic gun used by soldiers and criminals in the early 1900s
  • noun
  • /ˈtɑmi ɡʌn/
  • Archaic
translation icon : subfusil Tommy
  • During the movie set in the 1920s, the actors used a realistic Tommy gun for the chase scene.
  • firing the Tommy gun

The nigger shot him in the belly with a Tommy gun, with what must have been the last shot in it, because I saw him throw it down.

Examples

Synonyms

gun
vsTommy gun
1.0

A weapon that fires bullets or shells at high speed

is a specific small-caliber automatic weapon rather than a general firearm
submachine gun
vsTommy gun
8 4.6

A small automatic weapon that uses pistol bullets

is a particular .45-caliber example of that class
1 8.1

A .45-caliber automatic gun used by soldiers, police, and gangsters in the 20th century

is the same model but called by a popular informal nickname

Surface Forms

Tommy gun singular
Tommy guns plural

Morphology

tommy + gun

The constituent 'gun' clearly signals that the expression refers to a type of firearm, so a B1 learner who knows both words will at least recognize it as some kind of gun. However, 'Tommy' does not transparently indicate the specific Thompson .45-caliber submachine gun (it is an eponym/colloquial name and could be misinterpreted as 'soldier's gun'), so the precise historical/technical meaning is not fully predictable from the parts.

Etymology

The noun Tommy gun comes from the maker John T. Thompson, and people shortened 'Thompson' to Tommy, so the fast-firing gun was called the Tommy gun. Because it was used by 1920s gangsters and soldiers, that name stuck and today 'Tommy gun' means 'that particular .45 submachine gun'.