Tandoor or kiln (4)
I believe the answer is:
oven
This clue is a double definition.
'tandoor' is the first definition.
(I've seen this in another clue)
'kiln' is the second definition.
(I've seen this in another clue)
(Other definitions for oven that I've seen before include "Metal box in which to roast" , "A hot place" , "Small furnace" , "Cooking appliance" , "Kitchen appliance" .)