Transport to Oz (7)
I believe the answer is:
tornado
'transport to oz' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tornado that I've seen before include "Donator of fierce wind" , "wind-up" , "Donator (anag.)" , "Funnelling wind" , "Whirling windstorm" .)