End of stipulation (3)
I believe the answer is:
tip
'end' is the definition.
(tip is a kind of end)
'of stipulation' is the wordplay.
'of' indicates a hidden word.
'TIP' is hidden within 'stipulation'.
(Other definitions for tip that I've seen before include "lots of rubbish" , "Useful suggestion" , "Gratuity; hint" , "single piece of asparagus, perhaps" , "Give the likely winner for gratuity" .)