/red"uy'/ , n.
1. the condition of having bloodshot eyes, as from eyestrain or lack of sleep.
2. Also, red eye, redeye . Informal. a commercial airline flight between two distant points that departs late at night and arrives early in the morning.
3. redeye (def. 3).
4. 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.
adj.
5. 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.
[ 1965-70, for def. 2 ]