Get-out-of-jail fee
I believe the answer is:
bail
'get-out-of-jail fee' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for bail that I've seen before include "Security for temporary release" , "Surety - part of wicket - scoop" , "Security for release from custody" , "Crosspiece on a 14 across" , "one puts up then another jumps?" .)