A river, about 248 km (154 mi) long, of southern Switzerland and northern Italy flowing generally southward to the Po River. Hannibal defeated the Romans along the banks of the river in 218 B.C.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2007. Published by Houghton Mifflin Company. All rights reserved.