- swill (n.)
- "liquid kitchen refuse fed to pigs," 1550s, from swill (v.).
- swill (v.)
- Old English swilian, swillan "to wash, gargle," with no certain cognates, but probably from Proto-Germanic *sweljanan, related to the root of swallow (v.). Meaning "drink greedily" is from 1530s. Related: Swilled; swilling.