nobbler

A person who interferes with a racehorse or greyhound in order to prevent it from winning a race.

A serving of beer or spirits.

Carl Wiesenhavern, a man of noble character, and, therefore a man who hates knavery, and has no fear of a knave, answered with his peculiar German coolness, "Here I am, what do you want?" "Nobblers round," was the eager reply. "If that's what you want," replied Wiesenhavern, "you shall have it with pleasure." "We got no money." "I did not ask for any: understand me well, though;" pointing at each of them with the forefinger of his clenched right hand, "you will have a nobbler a-piece, and no more: afterwards you will go your way. Are you satisfied with my conditions?"

1874, [John Brady], The McIvor Times and Rodney Advertiser (Heathcote, Vic. : 1863 - 1918) Thursday 24 December 1874 Coroner's Inquest http://trove.nla.gov.au/ndp/del/article/89693062#pstart8412354 - 12-year-old witness to road accident death of his father, ‘My father only had two nobblers at Dwyer's place that morning.’

A thimbleman's or cardsharp's accomplice or shill, who poses as a player of the game to suggest that it is easy to win.