Definition of swills:
(v) :
(transitive) To drink (or, rarely, eat) greedily or to excess.
(n) :
(informal) A large quantity of liquid drunk at one swallow.
(n) :
(informal) Inexpensive beer or alcohol.
(n) :
(collective) A mixture of solid and liquid food scraps fed to pigs etc; especially kitchen waste for this purpose.
(n) :
(by extension) Any disgusting or distasteful liquid.
(n) :
(by extension, figurative) Anything disgusting or worthless.