Slide could be related to any of these.

• Photographic slide or transparency - a thin translucent photograph bound in paper, plastic or similar frame and often used for projection with use of a slide projector.
• Slide rule - a simple analog calculator
• Slide guitar - a musical instrument
• Slide whistle - a musical/wind instrument
• Microscope slide - a thin glass sheet used to hold objects for examination
• Water slide - a popular water sport
• Dark slide - a skateboarding trick
• Jakarta Slide - a Content Management System software
• Pistol slide - the upper half of a pistol that contains the barrel.
• Playground slide - a smooth, sloped surface down which (usually) children slide while sitting down
• Slide (baseball) - in baseball, dropping to the ground when going into a base to avoid a tag.