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slipstream

[slip-streem]
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noun Also slip stream.
  1. Aeronautics. the airstream pushed back by a revolving aircraft propeller.Compare backwash(def 2), wash(def 31).
  2. the airstream generating reduced air pressure and forward suction directly behind a rapidly moving vehicle.
verb (used without object)
  1. to ride in the slipstream of a fast-moving vehicle.

Origin of slipstream

First recorded in 1910–15; slip1 + stream
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for slipstream

slipstream

noun
  1. Also called: airstream, race
    1. the stream of air forced backwards by an aircraft propeller
    2. a stream of air behind any moving object
verb
  1. motor racing to follow (another car, etc) closely in order to take advantage of the decreased wind resistance immediately behind it
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

Word Origin and History for slipstream

n.

also slip-stream, 1913, from slip (n.2) + stream (n.).

Online Etymology Dictionary, © 2010 Douglas Harper