- either of two areas in the ocean between 40° and 50° N or S latitude, noted for high winds and rough seas.
Origin of roaring forties
First recorded in 1875–80
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the Roaring Forties nautical the areas of ocean between 40° and 50° latitude in the S Hemisphere, noted for gale-force winds