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Webster 1913 Edition

Noun.

[Gael.

srath

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,

Strath

don,

Strath

[Scot.]

The long green

strath

of Napa valley.

R. L. Stevenson.

Noun.

A vale, bottom or low ground between hills. [Not in use.]

strath ‎(plural straths)