Spring over (5)
I believe the answer is:
vault
'spring over' is the definition.
(to vault something is to jump over it)
This is all the clue.
(Other definitions for vault that I've seen before include "Secure room in bank" , "Leap - wine or money chamber?" , "Leap - arched ceiling" , "You can do this with a pole" , "Jump over a crypt? (5)" .)