Devil crossing river to see a pal (6)
I believe the answer is:
friend
'a pal' is the definition.
(I've seen this before)
'devil crossing river' is the wordplay.
I cannot quite see how this works, but
'river' could be 'r' (abbreviation) and 'r' is located in the answer.
'devil' could be 'fiend' (synonyms) and 'fiend' is present in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
'to see' is the link.
Can you help me to learn more?
(Other definitions for friend that I've seen before include "Companion; Quaker" , "Person with whom you have a bond of mutual affection" , "allowed to pass by the guard" , "Organisation's supporter" , "Buddy, chum" .)