What is the origin of the idiom "cash in one's chips" and when to use it?

The idiom "cash in one's chips" originates from the world of gambling, particularly in casinos. In a casino, players use chips as a form of currency. "Cashing in one's chips" means exchanging your gambling chips for money or leaving the game, often after experiencing losses. Over time, the expression has evolved to refer to someone's death, suggesting that they have reached the end of their life and are departing from this world.