Enjoy a hill in chilly weather, say

SLED

Think of a snowy ride that starts with "s" and glides down slopes for winter fun.

This clue plays with the idea of having fun on a snowy hill when it's cold outside. "Enjoy a hill" hints at the activity of sledding, while "chilly weather" reinforces the winter setting where you'd use a sled. The word "say" signals that this is just one example of how you might enjoy a hill in those conditions.