Pass forward, albeit with cause to pause (5)
I believe the answer is:
colon
'to pause' is the definition.
(thesaurus)
'pass forward' is the wordplay.
'pass' becomes 'col' (col is a term for a mountain pass).
'forward' becomes 'on'.
'col'+'on'='COLON'
'albeit with cause' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for colon that I've seen before include "Part of the intestine - punctuation mark" , ": - bit of the gut" , "Part of body; some punctuation" , "that may cut sentence" , "Part of intestines" .)