Green’s Dictionary of Slang

1. (US gambling) a gambling chip, esp. one given to a dealer as a gratuity; thus as v., to tip a dealer.

2000		P. Earley Super Casino 229: ‘I blew all my tokes and bankroll one week’.
2003		M. Wiesenberg ‘Poker Dictionary’ on Planet Poker 🌐 toke 1. (n) Tip, often given by a player in exchange for having been dealt a winning hand. ‘Did you get a toke for dealing him that big winner?’ No one knows the derivation of this word, but it may come from token (that is, of appreciation). 2. (v) Tip. ‘Don’t forget to toke the dealer when you win a big pot.’.

2. (US) a tip given to a cab-driver for bringing clients to a gambling establishment, brothel etc.

1986

Chapman NDAS.