olemus
füüsiline või virtuaalne liugelement
= a sliding comonent, physical or virtual

näiteid
https://duckduckgo.com/?q=slider+in+machine+tool&t=h_&iar=images&iax=images&ia=images

https://duckduckgo.com/?q=slider+in+zipper&t=h_&iar=images&iax=images&ia=images

https://duckduckgo.com/?q=slider+in+gui&t=h_&iar=images&iax=images&ia=images

https://en.wikipedia.org/wiki/Slider_(computing)