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A man whose identity is unknown or being protected, as in legal proceedings. The spellings "Nerks" and "Nurk" can also be used. Primarily heard in Australia. The victim is a Fred Nerk—no identification was found on him. The case was brought by a Fred Nerk, so we don't know the true identity of the man suing us.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.