/ ˈfræŋkənstaɪn; NAmE / noun
(also ˌFrankenstein's ˈmonster , ˌFrankenstein ˈmonster ) used to talk about sth that sb creates or invents that goes out of control and becomes dangerous, often destroying the person who created it
ORIGIN: From the novel Frankenstein by Mary Shelley in which a scientist called Frankenstein makes a creature from pieces of dead bodies and brings it to life.
For more information see the Cultural Guide