noun

• (countable) Any of several mammalian species of the family Suidae, having cloven hooves, bristles and a snout adapted for digging; especially the domesticated animal Sus domesticus.
  "The man kept a pen with two pigs that he fed everything from carrots to cabbage."
• (countable) Any of several mammalian species of the family Suidae, having cloven hooves, bristles and a snout adapted for digging; especially the domesticated animal Sus domesticus.
  "Weanlings grow into feeder pigs, and feeder pigs grow into slaughter hogs. […] Ultimately the end use for virtually all pigs and hogs is to be slaughtered for the production of pork and other products."
• (uncountable) The edible meat of such an animal; pork.
  "Some religions prohibit their adherents from eating pig."
• (uncountable) A light pinkish-red colour, like that of a pig (also called pig pink).
  "So far on the streets there's been a lot of metallic pink (the kind of pink as in the shade of pig you get, and this is exactly the shade of the diary I've been writing in) […]"

verb

• (of swine) To give birth.
  "The black sow pigged at seven this morning."
• (intransitive) To greedily consume (especially food).
  "They were pigging on the free food at the bar."
• (intransitive) To huddle or lie together like pigs, in one bed.
• (intransitive) To live together in a crowded filthy manner.

noun

• (Scotland) An earthenware pot or jar
• (Scotland) An earthenware pot or jar

noun

• (medicine, biology) Abbreviation of polyclonal immunoglobulin.