drown one's sorrows
Drink liquor to escape one's unhappiness. For example, After the divorce, she took to drowning her sorrows at the local bar. The notion of drowning in drink dates from the late 1300s.
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.