A thin opening or groove in something. You can fit a card or letter into the slot on a door.

A gambling machine operated by dropping one or more coins or tokens into a slot and pulling a handle or pushing a button to activate from two to three rotating reels marked into horizontal segments by varying symbols. The machine pays off according to how and how many of these symbols line up when the reels come to rest. Traditionally, these symbols include stars, card suits, bars (seven is a favourite), various pictured fruits–cherries, oranges, lemons, and watermelons are popular–and the words jackpot and bar. Also known as slot machine, fruit machine, or poker machine.

A wildly popular casino game, slots have been around for over a century and their design has evolved and morphed but the basics remain the same. Whether you’re writing about slots for a blog, website or online magazine, the best way to write an interesting article is to have all your facts straight. That means researching RTPs, bonus programs, payouts, jackpots and all the other details that will help readers understand what they’re playing and how it works. You can do this by visiting the actual site you’re writing about or by visiting the developer’s own website. It’s always better to get your information directly from the source rather than from a review site that might be out of date. This approach will keep readers from clicking away to find the answers elsewhere.