Green’s Dictionary of Slang

1. a tooth; usu. in pl., esp. when yellow and rotten.

1821		W.T. Moncrieff Tom and Jerry II vi: Sluice your dominoes – vill you?
1828		High Life in London 2 Mar. 88/2: [T]here were some good interchanges, both napping it on their dominoes, and both showing blood.
1825		N.Y. National Advocate 14 Nov. 2/3: There was considerable claret drawn [...] dominos shattered, bowsprit twisted away, and hulks otherwise damaged, till neither party was able to stand on his pins.
1846		Bell’s Life in Sydney 14 Nov. 3/2: Her smile gave the audience an opportunity of witnessing as good a box of dominos (at least for length) as could be exhibited by any dentist in Sydney.
1852		Kendal Mercury 17 Apr. 6/1: May be ye vould hoblidge hus by vetting yer dominoes (teeth) vith a drop of that.
1856		H. Mayhew Great World of London I 6: The mouth has come to be styled the ‘tater-trap;’ the teeth, ‘dominoes;’ the nose, the ‘paste-horn;’.
1862		Mayhew & Binny Criminal Prisons of London 6: [as cit. 1856].
1864		Bell’s Life in Sydney 12 Mar. 4/3: Then Tom hits Heenan on the mouth which forms a queer grimace, / So rum, you’d think his dominoes were masks upon his face.
1873		Sl. Dict.
1882		Sydney Sl. Dict. (2 edn) 3: Dominoes (or Ivories) - The teeth.
1904		Pall Mall Gaz. 24 Sept. 9/1: Gals in London Service generally Fall off about the dominose but the New Parler Maidse teeth was the Prettiest and Whitest I ever see.
1913		F.K. Sechrist ‘The Psych. of Unconventional Lang.’ Pedagogical Seminary Dec. n.p.: ‘To sluice the dominoes’ = to drink [W&F].

2. piano, or street organ, keys.

1906		O.C. Malvery Soul Market 39: The organist commenced to play at the request of Ben, who had given him the cryptic order of ‘Set about the dominoes, Bill’.
1935		Thieves Slang ms list from District Police Training Centre, Ryton-on-Dunsmore, Warwicks 4: Dominoes: piano keys.
1937–84		Partridge DSUE (1984) 327/1: from ca. 1880; ob.

3. (US) a die; usu. in pl.; thus jumping dominoes, crooked dice; domino boy, a dice player.

1920		H. Wiley Wildcat 14: The lodge brother galloped the dominoes for two passes.
1935		A.J. Pollock Und. Speaks n.p.: Jumping dominoes, crooked dice.
1949		Monteleone Criminal Sl. (rev. edn).
1960, 1975		Wentworth & Flexner DAS.
1971		(con. 1930s) D. Wells Night People 69: All the domino boys are asleep.

4. (drugs) a capsule containing a combination of an amphetamine and a sedative.

1967		Glatt et al. Drug Scene in Grt Britain 115: Dominoes – Durophet spansules.
1976		R. Sabbag Snowblind (1978) 240: The most popular word is ups. Brain ticklers, browns, cartwheels, chalk, Christmas trees, coast-to-coasts, dominoes [...] are words of the sixties and are out of use now.
2001		ONDCP Street Terms 8: Dominoes — Amphetamine.