European bound to escape secretly (5)
I believe the answer is:
elope
'escape secretly' is the definition.
(I know this)
'european bound' is the wordplay.
'european' becomes 'E' (abbreviation e.g. EU).
'bound' becomes 'lope' (to lope is to travel with bounding stride or bound).
'e'+'lope'='ELOPE'
'to' is the link.
(Other definitions for elope that I've seen before include "escape" , "Run away to get married" , "Run away in secret" , "do a moonlight flit" , "Run off with Mr/Ms Right" .)