Sign of the cold winter in Paris with rat outside (9)
I believe the answer is:
shivering
'sign of the cold' is the definition.
'winter in paris with rat outside' is the wordplay.
I cannot quite see how this works, but
'in' is within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for shivering that I've seen before include "Evidently cold" , "Shaking (with the cold)" , "trembling?" , "excited" .)