- to swallow (a container of beverage) without interruption.
- to swallow a beverage without interruption.
- by swallowing or gulping without interruption: drinking their soft drinks chug-a-lug.
Origin of chug-a-lug
An Americanism dating back to 1955–60; imitative rhyming compound
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018