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roaring forties

plural noun
  1. either of two areas in the ocean between 40° and 50° N or S latitude, noted for high winds and rough seas.
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Origin of roaring forties

First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for roaring forties

Roaring Forties

pl n
  1. the Roaring Forties nautical the areas of ocean between 40° and 50° latitude in the S Hemisphere, noted for gale-force winds
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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