What is "rufflers"

Usage examples of "rufflers".

She began to see a few familiar faces on the edges of the crowd, rufflers and whores and such anticipating the night, which was theirs.

There were guards, gilt-armed guards, with plumes and cloaks and more flash than ever the rufflers of midtown dared sport.

And, la, as to yonder base rufflers, think ye they have not their fill, but yet desire more?