Arabic greeting (6)
I believe the answer is:
salaam
'arabic greeting' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for salaam that I've seen before include "Oriental greeting or homage" , "Gesture made by foreigner" , "Muslim salutation offering peace" , "Masala (anag) - Arabic greeting" , "Oriental greeting with bow of obeisance" .)