slider

American  

[slahy-der] / ˈslaɪ dər /

noun

1. a person or thing that slides.

2. Baseball. a pitch similar to a curveball but one in which the ball rolls or slides, rather than spins, out of the pitcher’s hand and, like a curveball, drops and veers as it approaches home plate, sharply but with less of a curve.

   Johnson’s unhittable slider made him one of the best pitchers in the history of the game.

3. any of several freshwater turtles of the genus Chrysemys, of North America, having a smooth shell usually olive brown with various markings above and yellow below: some, especially C. scripta, are raised commercially and the young sold as pets, rarely surviving to adulthood.

4. a small burger on a bun.

   beef and lamb sliders.

---

Etymology

Origin of slider

First recorded in 1520–30; 1930–35 slider for def. 2; slide + -er ¹

Example Sentences

Some users complained that it made the screen hard to read, and the company added a slider that will allow people to adjust its appearance.

From The Wall Street Journal • Jun. 8, 2026

He has added a cutter to the mix, to pair with his curveball and slider.

From The Wall Street Journal • Jun. 5, 2026

Three of his four pitches — the four-seam, slider and splitter — averaged at least 1.2 mph faster than his yearly average.

From Los Angeles Times • May 31, 2026

They can tell you how many times a slider spins on its way home, the exact angle of every swing and how long it takes an outfielder to break on a fly ball.

From The Wall Street Journal • May 4, 2026

Today, they might even call it a slider.

From "Life Is So Good" by George Dawson