dalles

Dalles (dalz), n. pl. [F. dalle a tube, gutter, trough.] Defn: A rapid, esp. one where the channel is narrowed between rock walls. [Northwestern U. S. & Canada] The place below, where the compressed river wound like a silver thread among the flat black rocks, was the far-famed Dalles of the Columbia. F. H. Balch.

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