Kiln from Slovenia (4)
I believe the answer is:
oven
'kiln' is the definition.
(I've seen this in another clue)
'from slovenia' is the wordplay.
'from' indicates the answer is hidden within the clue.
'OVEN' is hidden in the letters of 'slovenia'.
(Other definitions for oven that I've seen before include "Cooker; furnace" , "Chamber for baking" , "Metal box in which to roast" , "Liquid oxygen; salmon" , "Furnace, kiln" .)