ETYM AS. slîde.
1. A sloping chute down which children can slide.
2. The act of sliding or gliding; SYN. glide.
3. Flat rectangular piece of glass on which specimens can be mounted for microscopic study.
4. (Geology) The descent of a large mass of earth or rocks or snow etc.

(Irregular preterit, past participle: slid)
1. To move smoothly along a surface; slip; to coast over snow or ice c of a base runner in baseball; to fall or dive feetfirst or headfirst when approaching a base
2. To slip or fall by loss of footing; to change position or become dislocated; shift
3. To slither along the ground; crawl; to stream along; flow
4. To move or pass smoothly or easily; to pass unnoticed or unremarked
5. To pass unobtrusively; steal; to pass by gradations especially downward
6. To cause to glide or slip; to traverse in a sliding manner
7. To put unobtrusively or stealthily
8. To move smoothly along a surface

A semi-transparent photographic image mounted in a frame, viewed with a slide projector; SYN. lantern slide.