China, silver, or possibly glass (5)
I believe the answer is:
plate
This might be a double definition.
'china silver' is the first definition.
'plate' can be an answer for 'silver' (silver can mean dishes, crockery etc). I'm not sure about the 'china' bit.
'possibly glass' is the second definition.
'plate' can be an answer for 'glass' (thesaurus). I am not sure about the 'possibly' bit.
'or' is the link.
Can you help me to learn more?
(Other definitions for plate that I've seen before include "Denture" , "trophy" , "Salver" , "Flat dish; gold and silver ware" , "Item of crockery" .)