Parisians wouldn't call it a flower, so nor will I! (5)
I believe the answer is:
seine
'i' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
I cannot understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for seine that I've seen before include "French river -- type of fishing net" , "Paris's river" , "Parisian river" , "Second longest river in France" , "Paris river" .)