Slope, white and cordial in fine weather (3,3)

I believe the answer is:
ski run
This could be a double definition.
'slope white' is the first definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe you can see an association between them that I can't see?
'cordial in fine weather' is the second definition.
Although both the answer and definition are singular nouns, I don't see how one could define the other.
'and' acts as a link.
Can you help me to learn more?
(Other definitions for ski run that I've seen before include "Winter sports slope" , "Snow-covered slope" , "Recreational snow slope" , "Downhill course in winter" , "cold course" .)
