Noun

1. Agent noun of slide; one who slides.
2. A pitch thrown with added pressure by middle and ring fingers yielding a combination of backspin and sidespin, resulting in a motion to the left when thrown by a right handed pitcher.

   The closer had a wicked slider that was almost unhittable.

3. A similar delivery in which the wrist and ring finger work to impart backspin to the ball.
4. A small greasy hamburger.

   We ordered five sliders.

5. A piece of teflon or similar material attached to a curling shoe that allows the player to slide along the ice.
6. A widget allowing the user to select a value on a sliding scale.
7. Any sliding component, such as the thumb of a scroll bar.

See also

• curveball
• fastball
• cut fastball
• two-seam fastball
• split finger fastball
• sinker
• screwball
• knuckleball