[1] : The Collaborative International Dictionary of English v.0.48

dalles \dalles\ da^lz, n. pl. f. dalle a tube, gutter,
   trough.
   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.
   webster 1913 suppl.

Dalles >> D Words
Dalles, definition of term: Dalles
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