0 past simple and past participle of swill --
1 to cause a liquid to flow around or over something, often in order to clean it: --
2 to drink, especially alcohol, quickly and in large amounts --
One well-known character, known for a certain habit, swilled back his pint, strode up to the fire, and was about to spit with relish into it.
Half the amount was swilled around the mouth for two minutes and discarded, and the procedure repeated with the remainder.
The term "mouth bath" implies that the liquid is passively held in the mouth rather than vigorously swilled around, which could dislodge a blood clot.
The rubbish is swilled down the streets to a collecting point.