Frolic, gambol (5)
I believe the answer is:
caper
I believe this clue is a double definition.
'frolic' is the first definition.
(I know that frolic can be written as caper)
'gambol' is the second definition.
(I know that gambol can be written as caper)
(Other definitions for caper that I've seen before include "Frisk" , "Frolic - plant with edible buds" , "Pickled bud - escapade" , "Something in the sauce" , "Jump about playfully" .)