What is the meaning of Slot_machine?

Any machine operated by placing a coin or token into a slot, especially:

1. A machine so operated to play games of chance for money, especially those with a lever and three or more rollers used to achieve combinations.

   A machine so operated to play games of chance for money, especially those with a lever and three or more rollers used to achieve combinations.

   Synonym of vending machine.

   A gas stove that requires the insertion of a coin to operate.

   slot machine

   Source: wiktionary.org