Definition of slide noun from the Oxford Advanced Learner's Dictionary

slide

noun

slaɪd

slaɪd

becoming lower/worse

1 [countable, usually singular] a change to a lower or worse conditiona downward slide in the price of oilthe team's slide down the tabletalks to prevent a slide into civil warThe economy is on the slide (= getting worse).a stock market slide

on ice

2 [singular] a long, smooth movement on ice or a smooth surface

Synonym

skidHer car went into a slide.a front wheel slide

for children

3 [countable] a structure with a steep slope that children use for sliding downto go down the slide

fall of rock

4 [countable] a sudden fall of a large amount of rock or earth down a hill

Synonym

landslideI was afraid of starting a slide of loose stones.

photograph

5 [countable] a small piece of film held in a frame that can be shown on a screen when you shine a light through it

Synonym

transparencya talk with colour slides

computers

6 [countable] one page of an electronic presentation, that may contain text and images, that is usually viewed on a computer screen or projected onto a larger screenI'm still working on the slides for my presentation.

for microscope

7 [countable] a small piece of glass that something is placed on so that it can be looked at under a microscope

part of musical instrument

8 [countable] a part of a musical instrument or other device that slides backwards and forwards

for hair

9 [countable] (British English) = hairslide