Escape to form union? (5)
I believe the answer is:
'escape' is the definition.
(I know that elope is a type of flee)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for elope that I've seen before include "leave with lover" , "Run away with one's beloved" , "Do a runner" , "escape" , "Run away to wed" .)