Way around mountainside verges (4)
I believe the answer is:
mode
'way' is the definition.
(I know that way can be written as mode)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for mode that I've seen before include "Manner, style" , "Trend" , "Way of doing something" , "Fashion; manner" , "Fashion; way of performing" .)