1. A tradesman
2. Any one with an occupation such as a plumber or electrician, that has a ute with a tray dog or a white van with PVC tubes attached to the top.
The trady was doing well for himself with his plastering business, finally able to pay off the white trady van (complete with PVC tubes) and take his lovely wife Joyce and the kids out for tea at the pub.
adj. describing someone who trades frequently, as opposed to taking money for goods or services.
"yeah, his work is killer. And he's great if your broke. He takes trades... food, body work, etc. He's pretty trady like that."