from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An alcoholic drink taken the morning after to cure a hangover or withdrawal symptoms.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. an alcoholic drink supposed to cure a hangover
From “hair of the dog that bit you”, a folk remedy for rabies by placing hair from the dog that bites one into the wound. The use of the phrase as a metaphor for a hangover treatment dates at least to the 16th century. (Wiktionary)