The inner part of the wheel that slants downwards and doesn’t spin. The ball will usually bounce off the bottom track into a pocket after dropping from the back track

 A wheel that has been tampered with is known as a biased wheel. If this occurs, it will typically be an inside job at a particular casino or a common defect. The operator will shut it down as soon as they recognize the problem. It is also sometimes called a gaffed wheel.

Well before we had blue chip stocks or companies we had the simple blue chips that were used for betting in card games like poker and faro. As the blue chips were typically assigned the highest value in these games, the term became extended to refer to other financial matters which were thought likely to be profitable. The red chips in card games are generally less valuable than the blue, and red chip may also be found referring to stocks (those which are viewed as less desirable investments than blue chips).

Languidly and with a becoming blase air he would walk up to the faro table of a gaming room, and invest a few hundreds in “blue chips” just as a starting “stake.” He was a marvel at the “call” of the “deal.”

— The Wheeling Daily Intelligencer (Wheeling, WV), 18 Jan. 1866

A player who is considered skilled at card games is called a card sharp. While you will be happy playing alongside a card sharp at blackjack, since he is only taking money from the dealer, you don’t want to play one at poker because he will be winning your money. https://eylwsktd.xyz/