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fish ladder

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noun
a series of ascending pools constructed to enable salmon or other fish to swim upstream around or over a dam.
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Origin of fish ladder

An Americanism dating back to 1860–65
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use fish ladder in a sentence

British Dictionary definitions for fish ladder

fish ladder

noun
a row of ascending pools or weirs connected by short falls to allow fish to pass barrages or dams
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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