And from there I fell in with a man who was a professional gambler on the river boats.

He was a professional gambler, and a damned good one.

The exception is for people who can claim to be professional gamblers.

His parents were both professional gamblers, and the family moved often.

Maybe you do need the advice of a professional gambler.

He's a professional gambler, which is legal on a large number of planets.

She had never been ashamed that her father was a professional gambler.

Although his first career after leaving university was as a teacher in London, he quickly gave it up to become a professional gambler.

"Matter of fact, he made his stake for law school as a professional gambler."

We had quite a number of professional gamblers, who, I am bound to say, usually made good soldiers.