Wells gets out of jail (7)
I believe the answer is:
springs
This clue is a double definition.
'wells' is the first definition.
(a well is a spring of water)
'gets out of jail' is the second definition.
(spring can mean to break out of jail)
(Other definitions for springs that I've seen before include "Elastic metal coils" , "Jumps; metal coils" , "what might be after Alice?" , "Natural flows of ground water" .)