Flesh and blood covering fifty pots fired here (4)
I believe the answer is:
kiln
'pots fired here' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'flesh and blood covering fifty' is the wordplay.
'flesh and blood' becomes 'kin' (I've seen this before).
'covering' indicates putting letters inside.
'fifty' becomes 'L' (Roman numeral).
'kin' enclosing 'l' is 'KILN'.
Can you help me to learn more?
(Other definitions for kiln that I've seen before include "Furnace for firing bricks" , "Industrial furnace" , "Potter's Friend" , "Furnace, oven" , "Kind of oven" .)