Fraser, (Mad) FrankieFra‧ser, (Mad) Frank‧ie /ˈfreɪzə, mæd ˈfræŋki $ -zər/(1923–) a London gangster who spent more than 40 years in prison, and who was a friend of the Kray twins (famous violent criminals who were in prison for murder). Fraser became well-known and wrote a book about his life.