Downhill event (6)
I believe the answer is:
slalom
'downhill event' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for slalom that I've seen before include "Downhill race over a winding course on skis" , "Downhill ski race over a winding course" , "Downhill ski-race over a winding course" , "Winter Olympic event" , "Downhill skiing race" .)