1 : suffering from brain injury from repeated blows to the head : affected with or exhibiting chronic traumatic encephalopathy In the argot of the not-so-sweet science, he had been punch-drunk, his brain dying prematurely as a result of his taking so many blows to the head. —

Where does the expression Punch Drunk come from?

The expression “punch-drunk” comes from boxing, according to A Dictionary of Slang and Unconventional English (8th ed.), by Eric Partridge. It describes the dopey, bewildered behavior of someone who has taken a lot of hard punches to the head.

What does punch slang mean?

If someone is 'punching', that means that they are 'punching above their belt', or in other words the person they are talking to or dating could be thought of as more attractive than them. (Tom is really being ambitious right now.