No rush in small hours, of course, for those on the slippery slope (6)
I believe the answer is:
slalom
'hours of course for those on the slippery slope' is the definition.
I can't tell whether this defines the answer.
'no rush in small' is the wordplay.
'no rush' becomes 'lalo' (I am not sure about this - if you are sure you should believe this answer much more).
'in' means one lot of letters goes inside another.
'small' becomes 'sm'.
'lalo' placed into 'sm' is 'SLALOM'.
Can you help me to learn more?
(Other definitions for slalom that I've seen before include "Skiing obstacle race" , "Downhill race over a winding course on skis" , "Ski race down zig-zag course" , "Downhill ski-race over a winding course" , "Ski racing event" .)