Definition of "chug" [chug]

• A dull explosive sound, usually short and repeated, made by or as if by a laboring engine. (noun)
• To make dull explosive sounds. (verb-intransitive)
• To move or travel while making dull explosive sounds. (verb-intransitive)
• Slang To chugalug. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "As you’re thinking of Nolan Ryan, you hear a freight train chug along"
• "Experiment with topwater baits such as chug bugs, pop-r, etc."
• "HOLMES: Yes, this is a different kind of chug, chug, chug."