Wiktionary
a. (context colloquial English) Contraction of (term: old), especially used before names as a sign of affection ("your ol' Grandpa").
Usage examples of "ol'".
When she went off to art college the following autumn, she would never see ol' Boomer again, she was convinced, and that was fine with her.
And that ol' Jewboy, Cohen, when was the last time he set foot in a synagogue?
In even tones, and with no more than two or three tugs at his beret, he told her that he was sorry but that her good ol' welder had found him some other fish that he must fry and that the aroma of their frying obviously had been making her sick.
It was back in the year twenty-one afore Christ that the ol' boy come across that fixer-upper.
An ol' widow-woman is expected to be on her feet twenty-four hours a day?
Because ol' Mohammed swore up and down that God took him for a horseback ride to heaven from the Temple Mount.
Leave it to ol' prefeminist Patsy to think there was a blessed man involved.
An inner voice whined that he might have been around long enough to ball ol' Ultima, but she scolded herself that she had a lot of nerve fretting over infidelity on the very sofa where she and Spike.
She liked the fact that ol' Dave maintained personal relationships with artists and that the clerks, who were usually too busy to wait on her, dressed in black sweatsuits, as if they were stagehands in some kabuki theater of art supplies.
I feel like handing over my purse to the first ol' boy I meet on the corner, save him the trouble of fleecing me.
I dunno what for, but anyways he had it under his pillow alongside his ol' Colt.
Indins, I tell him, helped Ol' Andy Jackson fight them Creeks, helped him steal most all of Georgia for the crackers.
But when they made him president, Ol' Hickory packed the Choctaws up right along with the dang Creeks, sent the whole sad and sorry bunch off to Oklahoma.
I told the Frenchman that Ol' Hickory kept a soft spot in his heart for Choctaws all the same.
Santini, he stood much too close, he had ol' Dolphus backed against a table.