Stipulate about dump (3)
I believe the answer is:
tip
'dump' is the definition.
(as in a rubbish tip)
'stipulate about' is the wordplay.
'about' says the answer is hidden in the clue (the clue goes around or about the answer).
'TIP' is hidden within 'stipulate'.
(Other definitions for tip that I've seen before include "Gratuity or light touch" , "Useful hint; end" , "tiny reward" , "List, gratuity" , "The rubbish dump" .)