John Doe
Concise Oxford English Dictionary © 2008 Oxford University Press:
John Doe
▶noun N. Amer.
- 1 Law an anonymous party, typically the plaintiff, in a legal action.
- 2 informal a hypothetical average man.
– origin C18: orig. in legal use as a name of a fictitious plaintiff, corresp. to Richard Roe, a fictitious defendant.
'John Doe' also found in these Oxford entries:

