Rounder 

A player who knows all the angles and earns his living at the poker table. The absolute opposite of a 'sucker.'

John was the best rounder around.

Rounder by valoem October 28, 2004

rounder 

One who makes a living or searches out opportunities usually with financial rewards by being around the business & social circles of uber-successful people.

You see John, he comes by the office every week or so to say hi but he's just another rounder looking for new deals.

rounder by FonzTrader November 9, 2013

rounder 

one who makes a living by playing poker

"Everyday he works from 9-5 just grinding it out."
"That's what it takes to be a rounder."

rounder by katan July 28, 2004

rounder 

A poker player traveling around looking for (usualy) high stake games.

Meet Mike, local rounder.

rounder by Puciek January 8, 2009

rounder 

Rounder: A girl that is so hot, she's worth rounding the block to get another look at.

Oh man, did you see the tits on that chick? Let's circle the block and check that shit out again, she's a rounder.

rounder by Hiwatt25 December 9, 2007

Rounder 

Informal, idiom.

Synonymous and interchangeable with 'character'.

An interesting, eccentric, odd, dangerous or otherwise unusual person depending on context.

I got my ass kicked by a couple of rounders.

or

Did you see that rounder Suzy's with?

Rounder by bad example December 26, 2010

Rounder 

One who makes the rounds of the bars. A dissolute person or drunkard.

His wife settled that rounder down.

Rounder by Sam Colt July 8, 2006