Spring, leap (4)
I believe the answer is:
jump
I believe this is a double definition.
'spring' is the first definition.
(I know that spring is a more specific form of 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" .)