Green’s Dictionary of Slang

bawker n.

[SE balker, one who hinders deliberately]

one who cheats at bowls.

[UK]Greene Disputation Betweene a Hee and a Shee Conny-Catcher in Grosart (1881–3) X 83: The Gripes and the Baukers are confederate, and their fortune at play euer sorts according as the Gripes haue placed their bets, for the Bawker he marketh how the laies goes, and so throes his casting.