Real Dictionary

slide
countable noun: A slide is a piece of glass on which you put something that you want to examine through a microscope.
countable noun: A slide is a piece of playground equipment that has a steep slope for children to go down for fun.
countable noun: A slide is a single page of an electronic presentation which you usually view on a computer or on a larger screen.
countable noun: A slide is a small piece of photographic film which you project onto a screen so that you can see the picture.
verb: If currencies or prices slide, they gradually become worse or lower in value.
verb: If you slide somewhere, you move there smoothly and quietly.
verb: To slide into a particular mood, attitude, or situation means to gradually start to have that mood, attitude, or situation often without intending to.
verb: When something slides somewhere or when you slide it there, it moves there smoothly over or against something.

slide in American English
to move along in constant frictional contact with some surface or substance
intransitive verb: to move along in continuous contact with a smooth or slippery surface
noun: an act or instance of sliding
transitive verb: to cause to slide, slip, or coast, as over a surface or with a smooth, gliding motion

slide in British English
verb: to move or cause to move smoothly along a surface in continual contact with it