Luges and the like

• Runners on the snow
• Vehicles suitable for this puzzle's theme
• They may crash into snowmen
• They're useless without runners
• Chilly vehicles
• Wintertime conveyances for, I guess maybe, LL Cool J
• Glides downhill
• Goes downhill, perhaps
• Winter Olympics sights

Wiktionary Word definitions in Wiktionary
n. (plural of sled English) vb. (en-third-person singular of: sled )