cutbank

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cut bank

Wikipedia

From cut +‎ bank.

cutbank (plural cutbanks)

1. (Canada, US) The outer edge of the bend in a stream or river, where the water cuts into the bank leaving the opposite side flat.
   • 2013, Philipp Meyer, The Son, Simon & Schuster, published 2014, page 154:

     That particular day, walking along the streambed by the church, they came to a fresh cutbank where the earth had caved.

• Cut Bank