Parisian river (5)
I believe the answer is:
seine
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">parisian river</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for seine that I've seen before include "Second longest river in France" , "French river -- type of fishing net" , "Paris's river" , "Paris river" , "Parisian river" .)