Exercising self-restraint in Europe? (9)
I believe the answer is:
continent
I believe this clue is a double definition.
'exercising self-restraint' is the first definition.
(I've seen this before)
'europe?' is the second definition.
(Europe is a continent)
'in' is the link.
(Other definitions for continent that I've seen before include "global sector" , "huge area of land" , "Monk vows" , "Several countries maybe" , "Temperate - land mass" .)