| Noun | 1. | slider - a person who slips or slides because of loss of traction individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do" snowboarder - someone who slides down snow-covered slopes while standing on a snowboard |
| 2. | slider - someone who races the luge sledder - someone who rides a sled | |
| 3. | slider - freshwater turtle of United States and South America; frequently raised commercially; some young sold as pets turtle - any of various aquatic and land reptiles having a bony shell and flipper-like limbs for swimming genus Pseudemys, Pseudemys - sliders; red-bellied terrapin | |
| 4. | slider - a fastball that curves slightly away from the side from which it was thrown |