Blackleg
Bouvier's Law Dictionary and Concise Encyclopedia · John Bouvier; revised by Francis Rawle · 1914
Bouvier's Law Dictionary and Concise Encyclopedia
A professed gambler, a person who makes a business of betting — not necessarily dishonest, though disreputable: 3 H. & N. 376; 31 L. T. O. S. 217, per Pollock, C. B. In the same case Watson, B., thought the word had no precise signification; but Martin and Br am well, BB.,