Meaning

• A dull, fairly quick explosive or percussive sound, as if made by a labouring engine.

• A large gulp of drink.

  "He drank his beer in three chugs."

• A homemade Cuban boat, built to carry emigrants to the USA, and often abandoned upon arrival.

Meaning

• To make dull explosive sounds.

• To move or travel whilst making such sounds.

  "We were chugging along a back road when the engine cut out."

• To drink a large amount (especially of beer) in a single action/without breathing; to chugalug. People usually chant this at the person who is drinking.

  "Chug! Chug! Chug!"