Difficult to get sailor with trick on street (8)
I believe the answer is:
abstruse
'difficult' is the definition.
(thesaurus)
'sailor with trick on street' is the wordplay.
'sailor' becomes 'ab' (abbreviation for able seaman).
'with' is a charade indicator (letters next to each other).
'trick' becomes 'ruse' (I've seen this before).
'on' means one lot of letters go next to another.
'street' becomes 'st' (abbreviation).
'ruse' after 'st' is 'struse'.
'ab' next to 'struse' is 'ABSTRUSE'.
'to get' is the link.
(Other definitions for abstruse that I've seen before include "Hard to understand, recondite" , "Hard to understand, complicated" , "Obscure or recondite" , "Arcane" , "Busts are oddly difficult to understand" .)