Winding downhill ski race (6)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
slalom
(Other definitions for slalom that I've seen before include "Ski race down zig-zag course" , "Windy skiing event" , "Downhill ski event" , "Downhill ski race over a winding course" , "Downhill ski-race over a winding course" .)