9 Grammatical Pitfalls


[red-ahy] /ˈrɛdˌaɪ/
the condition of having bloodshot eyes, as from eyestrain or lack of sleep.
Also, red eye, redeye. Informal. a commercial airline flight between two distant points that departs late at night and arrives early in the morning.
redeye (def 3).
an unwanted photographic effect in which a person's iris appears to be red: caused by the reflection of a flashbulb off the blood vessels of the retina.
Also, redeye. Informal. of or indicating a long-distance flight that leaves late at night:
the red-eye special from New York to Los Angeles.
Origin of red-eye
1965-70, for def 2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for red-eye
  • It tries for a chipper, light-hearted tone, but it gives the audience a grueling flight-a red-eye to nowhere.
  • Now-ubiquitous face-detection and red-eye-reduction functions make your subjects look marvelous.
  • Photo-editing tools include rotation, cropping, red-eye reduction and brightness controls.
  • red-eye flights are popular with business travelers looking to make a city-to-city jump without losing a workday.
  • Resting during your flight can make a big difference in how much jet lag you experience, especially if you are flying the red-eye.
  • As the name suggests, red-eye overnight flights can worsen the effects of jet lag due to increased fatigue from lost sleep.
  • Avoid red-eye flights, because the trip is only five hours and you won't have much time to sleep.
  • If you're taking a red-eye, try to get as much sleep as you can on the flight.
British Dictionary definitions for red-eye


  1. an aeroplane flight leaving late at night or arriving early in the morning
  2. (as modifier): a red-eye flight
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
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Word Origin and History for red-eye

"airplane flight which deprives travelers of sleep," 1968, from the red eyes of sleeplessness; earlier as a noun meaning "raw and inferior whiskey" (1819, American English).

Online Etymology Dictionary, © 2010 Douglas Harper
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