a river flowing from NW Wyoming through S Idaho into the Columbia River in SE Washington: Shoshone Falls. 1038 miles (1670 km) long.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
a river in the northwestern US, rising in NW Wyoming and flowing west through Idaho, turning north as part of the border between Idaho and Oregon, and flowing west to the Columbia River near Pasco, Washington. Length: 1670 km (1038 miles)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012