To back off, to go away, to beat it, to piss off.
Inherited from Ottoman Turkish دفع اول (defʿ ol), from Arabic دَفْع (dafʕ), equivalent to def (“an act of pushing away, repelling, expelling”) + ol (“2nd P. Sg. positive imperative of olmak (“to be, to become”)”).
Oefen met het spreken en memoriseren van " defol " en vele andere woorden en zinnen in Turks .