Jump a season? (6)
I believe the answer is:
spring
I believe this clue is a double definition.
'jump' is the first definition.
(spring is a kind of jump)
'a season?' is the second definition.
(spring is a kind of season)
(Other definitions for spring that I've seen before include "Schumann symphony" , "Water gushing" , "Source; help escape (from prison)" , "Flowering season of 7 dn" , "Well - bound" .)