Big wheel to bump on slope (5)
I believe the answer is:
mogul
'big wheel' is the definition.
(I've seen this in another clue)
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for mogul that I've seen before include "Indian emperor - important person" , "Bashaw" , "Big cheese - mound of hard snow on a ski slope" , "Very wealthy or powerful business person" , "Former Indian ruler; bump on a ski slope" .)