Leave for the Sahara perhaps (6)
I believe the answer is:
desert
This clue is a double definition.
'leave' is the first definition.
(desert can mean to leave or abandon)
'for the sahara perhaps' is the second definition.
(sahara is a kind of desert)
(Other definitions for desert that I've seen before include "See 33 Down" , "Hot dry area" , "land too dry to raise crops" , "Run away from the forces; desolate" , "Sweet" .)