■ verb ( past and past participle slid )
1》 move along a smooth surface, especially downwards, while maintaining continuous contact with it.
2》 change gradually to a worse condition or lower level.
■ noun
1》 a structure with a smooth sloping surface for children to ~ down.
↘a smooth stretch of ice or packed snow for sliding or tobogganing on.
2》 an act of sliding.
↘a part of a machine or instrument that ~s.
3》 a rectangular piece of glass on which an object is mounted or placed for examination under a microscope.
4》 a mounted transparency, especially one placed in a projector for viewing on a screen.
5》 Brit. a hair~.
Derivatives
slidable adjective
slidably adverb
Origin
OE slīdan (v.); related to sled and sledge 1 .