Murphy (Game), the n.
1. [1950s+] (orig. US Und.) of a prostitute, luring a client either to a room or a deserted alley, hallway etc. and then, instead of having sex, the client is beaten and robbed by a male accomplice, who may just strike, but may also pose as an aggrieved father, lover, brother etc; also attrib.
2. [1960s+] (US) a swindle in general.
[1990s+] a swindler.
[1960s+] a man who specializes in the Murphy game.