Pass over pages on English or French port (6)
I believe the answer is:
dieppe
'french port' is the definition.
(I've seen this before)
'pass over pages on english' is the wordplay.
'pass' becomes 'die' (as in passing away).
'over' is a charade indicator (letters next to each other) (in a down clue, some letters go over others).
'pages' becomes 'pp' (abbreviation for multiple pages).
'on' means one lot of letters go next to another (in a down clue, letters appear on others).
'english' becomes 'E' (abbreviation as in OED).
'die'+'pp'+'e'='DIEPPE'
'or' is the link.
(Other definitions for dieppe that I've seen before include "Port of N. France" , "N. French port" , "French town" , "French port opposite Kent" , "Channel port in northern France" .)