a small flat rectangular piece of glass on which specimens can be mounted for microscopic study
"The researcher carefully placed the tissue sample onto the clean slide before adding a drop of stain."
(geology) the descent of a large mass of earth or rocks or snow etc.
"The heavy rain caused an entire hillside to slide down into the valley below."
plaything consisting of a sloping chute down which children can slide
"The kids waited their turn to go down the colorful plastic slide in the playground."
a transparency mounted in a frame; viewed with a slide projector
"The old presentation still relied on physical slides rather than digital files because the projector needed them to work properly."
sloping channel through which things can descend
"The children rushed down the icy slide at the park, laughing as they sped toward the bottom."
An item of play equipment that children can climb up and then slide down again.
"The kids spent all afternoon taking turns climbing to the top of the park slide before zooming back down."
In plain English: A slide is a smooth, sloping surface that you sit on and go down quickly using friction to control your speed.
"The child sat on the bottom of the playground slide."
To (cause to) move in continuous contact with a surface
"The heavy book slid across the polished floor until it hit the wall."
In plain English: To slide is to move quickly and smoothly over a surface, often without using your feet.
"The child slid down the playground slide with excitement."
Usage: Use this verb when an object moves smoothly along a surface due to friction, such as sliding down a hill or across ice. Distinguish it from similar motions like glide by emphasizing the direct physical contact and often uncontrolled nature of the movement.
The word "slide" comes from the Old English slīdan, meaning "to slide," which traces back to a Proto-Indo-European root describing slippery surfaces. It entered Middle English as sliden and has remained largely unchanged in its core meaning since then.