Real Dictionary

swill
verb: If a liquid swills around, or if you swill it around, it moves around the area that it is contained in.
verb: If you swill an alcoholic drink, you drink a lot of it.

swill in American English
garbage, table scraps, etc. mixed with liquid and used for feeding pigs, etc.; wash
to drink, esp. liquor, in large quantities
to flood with water so as to wash or rinse
intransitive verb: to drink greedily or excessively
noun: liquid or partly liquid food for animals, esp. kitchen refuse given to swine; hogwash
transitive verb: to drink (something) greedily or to excess; guzzle

swill in British English
noun: wet feed, esp for pigs, consisting of kitchen waste, skimmed milk, etc
verb: to drink large quantities of (liquid, esp alcoholic drink); guzzle