Meat spread covering large item of crockery (5)
I believe the answer is:
plate
'item of crockery' is the definition.
(I've seen this before)
'meat spread covering large' is the wordplay.
'meat spread' becomes 'pate' (I've seen this before).
'covering' means one lot of letters goes inside another.
'large' becomes 'l'.
'pate' enclosing 'l' is 'PLATE'.
(Other definitions for plate that I've seen before include "This glass is thick as for shop window" , "Flower" , "Illustration on special paper in a book" , "Salver" , "Flat dish; gold and silver ware" .)