The word "Cagney" refers to James Cagney, who was a famous American film actor. He was known for playing strong and tough characters in movies. Although "Cagney" can also refer to his style or the type of roles he played, it is primarily recognized as a name.
In summary, "Cagney" is used to refer to James Cagney, a legendary American actor known for his tough character portrayals in films.