EXAMPLES FROM THE WEB FOR COZ
"As empty as an English squire, coz," cried the first speaker.
I should not rest quiet in the grave, coz, if I had not another turn at them.
I like the Baldwins best,' says I, ''coz they've got red cheeks jest like yours.'
If you come on my coz, you'll bring her back here, or to the castle, I suppose?
"Say 'au revoir,' but not 'good-bye,' sweet Coz," sang Madge lightly.
That would be against the law, coz; they would indict me sure!
You done git up; I don't 'sturb you, coz I knowed you was tired out.
The very room, coz she was in, Seemed warm from floor to ceilin'.
"'Coz we got scared—awful scared," said Dulcie under her breath.
I don't reckon we will get dar, 'coz I doesn't know de way now.
1550s, familiar abbreviation of cousin.