Emblem of justice, showing promise given to Society (5)
I believe the answer is:
sword
'emblem of justice' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps you can see an association between them that I can't see?
'promise given to society' is the wordplay.
'promise' becomes 'word' (as in 'I give you my word').
'given to' is a charade indicator (letters next to each other).
'society' becomes 's' (common abbreviation in names of organisations).
'word' after 's' is 'SWORD'.
'showing' is the link.
Can you help me to learn more?
(Other definitions for sword that I've seen before include "Weapon, often worn ceremonially" , "Command; social class" , "Combat" , "Weapon with long blade" , "Cutting weapon" .)