Pass or go across (8)
I believe the answer is:
traverse
This clue is a double definition.
'pass' is the first definition.
(traversing is a kind of passing)
'go across' is the second definition.
(I've seen this before)
(Other definitions for traverse that I've seen before include "Move across" , "Travel across or pass over" , "Cross sideways" , "Go across" , "Ski diagonally across (a slope)" .)