A type of slot machine where the amount a player bets determines the winning combinations.
The amount paid into and paid out by a slot machine respectively.
Coins come in various denominations, from a penny up to $5 or more.
The button a player presses to cash out their money from a machine.
The theoretical, long-term expected percentage of money bet that is either won by the casino or the player.
A slot machine with a fixed jackpot, rather than a progressive jackpot which grows until it is won.
A bonus offering one or more free spins.

UK slang for a slot machine. Some slot machines contain fruit images, such as cherries and lemons, on the spinning reels, hence the name. The original slot machines are also called one-armed bandits because they were operated by the lever on the side of the machine, and people lost money to them. Today almost every online casino provides reel slots that look similar to the slot machines. Some software providers even copied the fruit images used in the original fruit machines to make the online gambling experience as close to the traditional game as possible.
There are pubs in the UK that still offer fruit machines for their customers' entertainment. However, their return is set around 80% payout, which is lower than 90-95% payout in their online counterparts.
Examples:
I like to play fruit machines for their images.
Yesterday I lost all my money playing fruit machines in the casino.