Oasis embraced by chav endearingly (5)
I believe the answer is:
haven
'oasis' is the definition.
('haven' can be a synonym of 'oasis')
'embraced by chav endearingly' is the wordplay.
'embraced' indicates a hidden word.
'HAVEN' is hidden within 'by chav endearingly'.
(Other definitions for haven that I've seen before include "Small port, refuge" , "Refuge; harbour" , "Shelter (for ships)" , "Safe port" , "Safe refuge" .)