toke
n.— «While raking in some of my misplaced chips, a craps dealer explained to me that on good nights a personable dealer can make $500 in tips, or “tokes,” as he called them.» —“What Happened in Vegas Stayed in Vegas His Novel” by Charles McGrath New York Times Magazine Jan. 27, 2008. (source: Double-Tongued Dictionary)
Further reading
In 1916, a small-town newspaper in Pennsylvania printed a fanciful item about a local gathering with a guest list that included, among others, Miss Ella Vader, Mr. Ray Zor, and other punny names. This is part of a complete episode. Transcript of...
The expression to go chalk has to do with rankings in an athletic tournament and harks back to when seeded teams or players were listed on a chalkboard. To pick chalk means to choose one’s favorite competitor, and you can also speak of a chalk...
Yup, a toke is definitely a tip for the dealer at the casino table games.