Made of baked or fired clay (7)
I believe the answer is:
earthen
'made of baked or fired clay' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for earthen that I've seen before include "from the ground" , "(Of a pot) made of fired clay" , "Made of baked clay, perhaps ware" , "that's thrown in clay" , "(Of pot) made of baked clay" .)