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[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
Contemporary Examples
Historical Examples
  • It was inevitable that red-eye should win in the struggle against the two of us.

    Before Adam Jack London
  • Give us a sermon, parson, and you shall have a pint of red-eye!'

    City Crimes Greenhorn
  • Then no more came from the swamp, and red-eye was not among us.

    Before Adam Jack London
  • It was a vireo's nest; but it was too large, too downy, too yellow for red-eye.

    Wild Life Near Home Dallas Lore Sharp
  • Thus she might have got a breathing spell, but red-eye was fiendish.

    Before Adam Jack London
  • Similar to the red-eye but greener above and more yellowish on the sides.

    The Bird Book Chester A. Reed
  • red-eye stood up erect and began beating his hairy chest with his fist.

    Before Adam Jack London
  • The red-eye's eloquence was never very persuasive to my ear.

    A Rambler's lease Bradford Torrey
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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