Clasp ring-binder outside vault (6)
I believe the answer is:
spring
'vault' is the definition.
(both can mean to jump)
'clasp ring-binder outside' is the wordplay.
'outside' indicates the answer is hidden within the clue (a word is around or outside the answer).
'SPRING' is hidden in the letters of 'clasp ring binder'.
(Other definitions for spring that I've seen before include "Jump up in early season" , "Pounce -- pogo stick part" , "Bound < to start" , "warp" , "May is part of this" .)