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 the answer is hidden within the clue.
'TIP' can be found hidden inside '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" .)