Wikipedia
Chicago piano
The term Chicago piano has been used as a nickname for a number of weapons:
- Thompson submachine gun
- 1.1-inch anti-aircraft gun
- Multiple 2-pdr pom pom anti-aircraft gun
Usage examples of "chicago piano".
He filled the drum, then filled the clips, inserting a clip into the belly of the old 1921 Chicago piano, as the Thompson used to be called.