tailwind

[teyl-wind]

noun

a wind coming from directly behind a moving object, especially an aircraft or other vehicle (opposed to headwind).

Origin of tailwind

First recorded in 1895–1900; tail¹ + wind¹

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for tailwind

Contemporary Examples of tailwind

When Obama won Iowa in 2008, or Wisconsin, it felt like a presaging of November, like the candidate was riding a tailwind.
Michael Tomasky: No Rest for Romney After a Win in the Michigan Primary
Michael Tomasky
February 29, 2012
Mitt Romney blew into South Carolina on a New Hampshire tailwind and a Republican field that could do no right.
South Carolina Primary: Mitt Romney’s Bad Night
Patricia Murphy
January 22, 2012

British Dictionary definitions for tailwind

tailwind

noun

a wind blowing in the same direction as the course of an aircraft or shipCompare headwind

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