| Noun | 1. | slider - a person who slips or slides because of loss of traction | |
| 2. | slider - someone who races the luge | |
| 3. | slider - freshwater turtle of United States and South America; frequently raised commercially; some young sold as petsturtle - any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming | |
| 4. | slider - a fastball that curves slightly away from the side from which it was thrownfastball, heater, hummer, bullet, smoke - (baseball) a pitch thrown with maximum velocity; "he swung late on the fastball"; "he showed batters nothing but smoke" | |