Interrupt discussion, and here we are? (9)
I believe the answer is:
crossword
'here we are?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'interrupt discussion' is the wordplay.
'interrupt' becomes 'cross' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'discussion' becomes 'word' (synonyms).
'cross'+'word'='CROSSWORD'
'and' is the link.
Can you help me to learn more?
(Other definitions for crossword that I've seen before include "Puzzle like this one" , "Letter puzzle" , "What's here" , "(Usually) black and white puzzle" , "this, appropriately" .)