Impression made by English females at European Court (6)
I believe the answer is:
effect
'impression' is the definition.
(effect is a kind of impression)
'english females at european court' is the wordplay.
'english' becomes 'e' (abbreviation).
'females' becomes 'ff' (I've seen this in other clues).
'at' means one lot of letters go next to another.
'european' becomes 'e' (abbreviation e.g. EU).
'court' becomes 'ct'.
'e'+'ff'+'e'+'ct'='EFFECT'
'made by' is the link.
(Other definitions for effect that I've seen before include "Pocket pistol" , "It follows cause" , "Change produced by action, result" , "Consequence - impression" , "Result of action, or cause to happen" .)