"Hair of the dog" refers to the idea that drinking more alcohol can cure a hangover caused by drinking alcohol the night before. It's a hangover cure based on the concept that "like cures like ...

In some sense, ‘hair of the dog’ delays the time until you experience a hangover – but it cannot prevent it entirely.” “Some hangover symptoms are due to dehydration, so drinking plenty ...

Examples in Everyday Conversation In modern usage, "hair of the dog" usually pops up in a social setting when discussing hangover cures after a late night of drinking. For example, after a night ...