chug

1. To make dull explosive sounds. (intransitive)
2. To move or travel whilst making such sounds. (intransitive) · We were chugging along a back road when the engine cut out.
3. To move or travel at a steady, although not especially fast, pace. (intransitive)
4. To drink a large amount (especially of beer) in a single action/without breathing; to chugalug. Usually chanted at the person who is drinking. (colloquial, transitive) · Chug! Chug! Chug!
5. To function or perform with difficulty, typically due to inadequate resources or performance limitations. (intransitive) · My game chugs every time too many NPCs are onscreen.

He/she/it chugs · Past chugged · Past participle chugged · -ing form chugging