can't hold (one's) drink(redirected from can't hold liquor)
can't hold (one's) drink
Has a low tolerance for alcohol; becomes drunk after consuming only a small amount of alcohol. A: "Wow, how much did those two have to drink?" B: "Hardly anything—they just can't hold their drink."
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.