Green’s Dictionary of Slang

acey-deucey n.

[ace-deuce n.1 ]

1. (US) the game of craps.

[US](con. 1945) G. Forbes Goodbye to Some (1963) 157: A little acey-deucey . . . or maybe mah-jongg if they’d rather . . . about ten cups of tea.

2. see under ace-deuce.