How Scots show regret over European line to be toed (4)
I believe the answer is:
oche
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for oche that I've seen before include "Darts playing line" , "Line from which darts are thrown" , "Line from which a dart player throws" , "missile launching site" , "Missile launchers stand behind this" .)