air·flow

[air-floh]
noun
the air flowing past or through a moving body, as an airplane or automobile.

Origin:
1910–15; air1 + flow

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
airflow (ˈɛəˌfləʊ) [Click for IPA pronunciation guide]
 
n
the flow of air in a wind tunnel or past a moving aircraft, car, train, etc; airstream

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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00:10
Airflow is always a great word to know.
So is ninnyhammer. Does it mean:
a scrap or morsel of food left at a meal.
a fool or simpleton; ninny.
Example sentences
However, employing boundary-layer ingestion means the airflow into the engine
  is not uniform.
If it's almost always in the sun, find some way to shade it without messing
  with the airflow around it.
As a result, the upward motion was rapidly decelerated by the high speed
  airflow impacting against the foam.
Asthma attacks can last for minutes to days, and can become dangerous if the
  airflow is severely restricted.
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