- any of various fishes having red eyes, as the rock bass
- red-eyed vireo
- Slang strong, cheap whiskey
- Informal A late-night or overnight flight: caught the redeye from Los Angeles to New York.
- Any of several fishes with red eyes, as the rock bass.
- A coloration of the pupils in a color photograph, red in humans and varying in color in animals, caused by the reflection of the flash off the retina or tapetum.
- Slang Inferior whiskey.
- Alternative spelling of red-eye.