1
general::
Phrase(s): the hair of the dog that bit
one Fig. a drink of liquor taken when one has a hangover; a drink of liquor taken when one is recovering from drinking too much liquor. (Often the same type of liquor as one got drunk on.) • Oh, I’m miserable. I need some of the hair of the dog that bit me. • That’s some hangover you’ve got there, Bob. Here, drink this. It’s some of the hair of the dog that bit you.
McGrawhill's American Idioms And Phrasal Verbs