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headwind

American  
[hed-wind] / ˈhɛdˌwɪnd /

noun

  1. a wind opposed to the course of a moving object, especially an aircraft or other vehicle (tailwind ).


headwind British  
/ ˈhɛdˌwɪnd /

noun

  1. a wind blowing directly against the course of an aircraft or ship Compare tailwind

"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

headwind Scientific  
/ hĕdwĭnd′ /
  1. A wind blowing directly against the course of a moving object, especially an aircraft or ship.


Etymology

Origin of headwind

First recorded in 1780–90; (a)head + wind 1