Definition from Wiktionary, the free dictionary
know someone from Adam
- (idiomatic) To know or recognise someone at all.
- 1938, Graham Greene, Brighton rock
- 'Who is she, anyway? Interfering . . . pestering . . . you must know.' 'I don't know her from Adam,' the Boy said.
- 1963, Audrey Lillian Barker, The joy-ride and after
- "Well," he said, "do you know me from Adam?"