What is "trebbia"

The Trebbia (stressed Trèbbia; ) is a river predominantly of Liguria and Emilia Romagna in northern Italy. It is one of the four main right-bank tributaries of the river Po, the other three being the Tanaro, the Secchia and the Panaro. The drainage basin is divided among Emilia Romagna, , Liguria, , and Lombardy, . Its principal tributaries are the torrents Aveto and Perino (from the right) and the torrent Boreca (from the left).