Tops off boldly, little old couple parties together (4)
I believe the answer is:
bloc
'tops off boldly little old couple' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Perhaps you can see an association between them that I don't see?
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for bloc that I've seen before include "Political coalition" , "Group with a common policy" , "-- Forsyth, entertainer" , "Political group of nations" , "Political allies" .)