tarn

Meanings

1. 1
   noun

   a small mountain lake or pool, especially one formed in a hollow excavated by a glacier

   A dark tarn lay beneath the steep walls of the cirque.

From Middle English terne or tarne, from Old Norse tjorn, 'small lake or pond.' Once strongly associated with northern England, the word became a geographic term for a small mountain lake, often one occupying a glacial hollow.

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