Ski race (6)
I believe the answer is:
slalom
'ski race' is the definition.
(slalom is a kind of ski race)
This is the entire clue.
(Other definitions for slalom that I've seen before include "Downhill ski-race over a winding course" , "Winding ski-run" , "Ski race down zig-zag course" , "Ski racing event" , "Downhill race over a winding course on skis" .)