Spring, leap (4)
I believe the answer is:
jump
This clue is a double definition.
'spring' is the first definition.
(I know that spring can be written as jump)
'leap' is the second definition.
(I know that leap can be written as jump)
(Other definitions for jump that I've seen before include "Hurdle" , "Spring" , "Leap, bound" , "Make abrupt movement - start" , "Vault, bound" .)