Eastmain (ēstˈmān) [key], river, c.510 mi (820 km) long, rising in the Otish Mts., central Que., Canada, and flowing W into James Bay. Three miles (4.8 km) from its mouth is East Main (founded 1685), one of the oldest Hudson's Bay Company posts.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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