01 n. A valley of considerable size, through which a river runs; a valley bottom; -- often used in composition with the name of the river; as, St…
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A valley of considerable size, through which a river runs; a valley bottom; -- often used in composition with the name of the river; as, Strath Spey, Strathdon, Strathmore.[Scot.]“The long green strath of Napa valley.” — R. L. Stevenson.