Spring runs beneath headland (5)
I believe the answer is:
caper
'spring' is the definition.
(I know that caper is a type of spring)
'runs beneath headland' is the wordplay.
'runs' becomes 'r' (cricket abbreviation).
'beneath' is a charade indicator (letters next to each other) (in a down clue, some letters go beneath others).
'headland' becomes 'cape' (I've seen this in another clue).
'r' after 'cape' is 'CAPER'.
(Other definitions for caper that I've seen before include "Frisk" , "Lark" , "Pickled bud - escapade" , "Leap about" , "bound" .)