1. the unpleasant physical effects felt the day after drinking too much alcohol
2. something that remains from an earlier time or situation

Examples

• He had a terrible hangover after the party last night.
• She drank plenty of water to avoid getting a hangover.
• The headache from his hangover lasted all morning.
• The old dress code was a hangover from the previous administration.
• These outdated policies are hangovers from a different era.
• The company’s rigid hierarchy is a hangover from its military origins.