What is the meaning of pig?

noun

• Domestic swine.
  • synonyms: hog, grunter, squealer, Sus scrofa
• A coarse obnoxious person.
  • synonyms: slob, sloven, slovenly person
• A person regarded as greedy and pig-like.
  • synonyms: hog
• Uncomplimentary terms for a policeman.
  • synonyms: bull, cop, copper, fuzz
• Mold consisting of a bed of sand in which pig iron is cast.
  • synonyms: pig bed
• A crude block of metal (lead or iron) poured from a smelting furnace.

verb

• Live like a pig, in squalor.
  • synonyms: pig it
• Eat greedily.
  • usage: "he devoured three sandwiches"
  • synonyms: devour, guttle, raven
• Give birth.
  • usage: "sows farrow"
  • synonyms: farrow