Ada from Decatur in craps is an old slang name for the number 8. At the table, players or dealers may use it when a roll adds up to eight.

The phrase belongs to classic craps jargon. The game has a lot of names like this, and some of them sound unusual if you hear them for the first time. In live play, though, they are part of the table language. Ada from Decatur is one of those traditional expressions.

The number 8 stands out in craps because it shows up fairly often compared to many other totals. When someone says Ada from Decatur, they are not talking about a special strategy or a separate kind of bet. The meaning is much simpler: it is just a nickname for the number 8.

In practice, Ada from Decatur is simply an informal way to refer to eight in craps.