River of Florence and Pisa (4)

I believe the answer is:

arno

'river of florence and pisa' is the definition.
(I've seen this before)

This is the entire clue.

(Other definitions for arno that I've seen before include "River in central Italy" , "Italian river" , "25's river" , "River flowing through Florence and Pisa" , "River of 4 down?" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.