Green’s Dictionary of Slang

1. to throw dice in such a way that they ‘dribble’ slowly from the cup, thus facilitating manipulation by a cheat.

c.1786		Grose Classical Dict. of the Vulgar Tongue ms. additions n.p.: Dribble a Method of pouring out (as it were) the Dice from the Box gently, by which he can, if an old Practitioner, Cog one of them with his fore finger.
1788, 1796		Grose Classical Dict. of the Vulgar Tongue (2nd, 3rd edn) n.p.: dribble A method of pouring out, as it were, the dice from the box, gently, by which an old practitioner is enabled to cog one of them with his fore-finger.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.

2. (US black) to stutter.

1944		Cab Calloway New Hepsters Dict. in Calloway (1976) 260: to dribble (v.): to stutter. Ex., ‘He talked in dribbles.’.
1944		‘Jiver’s Bible’ in D. Burley Orig. Hbk of Harlem Jive.