European ensnared in small deception (7)
I believe the answer is:
sleight
'deception' is the definition.
(I've seen this before)
'european ensnared in small' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'ensnared in' is an insertion indicator (I've seen this in other clues).
'small' becomes 'slight' (I've seen this in another clue).
'e' inserted inside 'slight' is 'SLEIGHT'.
(Other definitions for sleight that I've seen before include "Tricky cunning" , "It's deceiving to the eye" , "Cunning action" , "Manual dexterity" , "Trickery" .)