gun moll
noun
slang
: moll sense 2b
Example Sentences
Recent Examples on the Web The template of the gangster and the gun moll was replicated throughout that era and remains a cultural touchstone to this day. 
Greg Hanlon, PEOPLE.com, 30 July 2021 Before Bonnie and Clyde gained fame during the Depression Era, the Whittemores — and the press who breathlessly covered them — established the archetype of the seductive bad boy and his loyal gun moll. Greg Hanlon, PEOPLE.com, 30 July 2021
Greg Hanlon, PEOPLE.com, 30 July 2021 Before Bonnie and Clyde gained fame during the Depression Era, the Whittemores — and the press who breathlessly covered them — established the archetype of the seductive bad boy and his loyal gun moll. Greg Hanlon, PEOPLE.com, 30 July 2021 Word History
Etymology
argot gun thief, rascal, by shortening & alteration from gonoph, ganef thief — more at ganef
First Known Use
circa 1908, in the meaning defined above