Green’s Dictionary of Slang

(UK Und.) to cheat, esp. at dice or cards; usu. as topping n.¹

1664		Etherege Love In A Tub II iii: How neatly I cou’d Top upon him!
1678		Behn Sir Patient Fancy V i: Pray, how long is’t since you left Toping and Napping, for Quacking, good Brother Cater-tray?
c.1698		B.E. Dict. Canting Crew n.p.: Top, to Cheat, or Trick any one [...] What do you Top upon me? do you stick a little Wax to the Dice to keep them together, to get the Chance? He thought to have Topt upon me, he design’d to have [...] Sharpt me.
1725		New Canting Dict. [as cit. c.1698].
1737, 1759, 1760, 1776		Bailey Universal Etym. Eng. Dict. [as cit. c.1698].
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1859		Matsell Vocabulum 91: top to cheat; to trick.