Definition of "old man"

"How'd your in-laws feel about you marryin' your wife? Maybe you could pass the paper bag and the comb test, but your old man had dark skin, kinky hair, and he was a dyed-in-the-wool baptist from out in the sticks."

2002 February, Don Spears, Playing for Keeps‎, Los Angeles: Milligan Books, page 183

“ […] Now if that thing is balling—and your old lady or your old man is off somewhere flashing and doesn't want to be touched—well, you get put down on acid, you can be on a bummer for months.”

1968, Joan Didion, “Slouching Towards Bethlehem”, in Slouching Towards Bethlehem

“Don't mention it, old man,” I responded courteously.

1934, P. G. Wodehouse, Right Ho, Jeeves

'Coming up, coming up, coming up,' Pop said. 'There you are, Charley, old man. Larkin Special. Don't ask what's in it. Don't stare at it. Don't think. Just drink it down. In ten minutes you'll feel perfick again.'

1958, H. E. Bates, The Darling Buds of May

A new light has entered into the life and transformed it wonderfully, the soul has been born again, the old man has been put off, the new man which is akin to Jesus Christ has been put on.

1906 , Richard Acland Armstrong, “What must I do to be saved?”, in George Gilbert Armstrong, editor, Richard Acland Armstrong: A Memoir, Green, page 155

‘You watch out for them old man brown snakes in here. I seen a shed skin back there in the hall.’

2002, Alex Miller, Journey to the Stone Country, Allen & Unwin, published 2003, page 177