The spelling redeye is also used in meaning 2. 义项2亦拼作 redeye。
1 N-COUNT 红眼航班;夜航航班 A red-eye or a red-eye flight is a plane journey during the night. 红眼航班;夜航航班 [informal]
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She was running to catch a red-eye to New York.
她急着去赶飞往纽约的红眼航班。
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He decided not to take the red-eye flight home but to wait and take a nine o'clock flight the following morning.
他决定不乘夜航航班回家，而是留下来搭第二天早上9点的飞机。
2 N-UNCOUNT [usually NOUN n] （由于拍摄时使用闪光灯等原因而在照片中呈现的）红眼 In photography, redeye is the unwanted effect that you sometimes get in photographs of people or animals where their eyes appear red because of the reflection of a camera flash or other light. （由于拍摄时使用闪光灯等原因而在照片中呈现的）红眼