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tailwind (plural tailwinds)
- A wind that blows in the same direction as the course taken by an aircraft, sailing ship, bird, etc.
- (figuratively, by extension) A force that accelerates progress.
- 2008 June 30, Michele Norris, “Tailwind Bars Sprinter From Claiming New Record”, in NPR:
- Now they measure this stuff in meters per second, and in any race, when a tailwind is going faster than two meters a second - or about four-and-a-half miles an hour - official records cannot be set.
a wind that blows in the same direction as the course of an aircraft or ship
- Of wind, to blow on a windmill or wind turbine in such a way that wind pressure is exerted on the wrong side of the sail or turbine assembly.