Meaning

• Any of several intelligent mammalian species of the genus Sus, having cloven hooves, bristles and a nose adapted for digging; especially the domesticated animal Sus scrofa.

  "The man kept a pen with two pigs that he fed from carrots to cabbage."

• (specifically) A young swine, a piglet (contrasted with a hog, an adult swine).

• The edible meat of such an animal; pork.

  "Some religions prohibit their adherents from eating pig."

• A light pinkish-red colour, like that of a pig (also called pig pink).

• Someone who overeats or eats rapidly and noisily.

  "You gluttonous pig! Now that you've eaten all the cupcakes, there will be none for the party!"

• A lecherous or sexist man.

  "She considered him a pig as he invariably stared at her bosom when they talked."

• A dirty or slovenly person.

  "He was a pig and his apartment a pigpen; take-away containers and pizza boxes in a long, moldy stream lined his counter tops."

• A very obese person.

• A police officer.

  "The protester shouted, “Don't give in to the pigs!” as he was arrested."

• A difficult problem.

  "Hrm... this one's a real pig: I've been banging my head against the wall over it for hours!"

• A block of cast metal.

  "After the ill-advised trade, the investor was stuck with worthless options for 10,000 tons of iron pig."

• The mold in which a block of metal is cast.

  "The pig was cracked, and molten metal was oozing from the side."

• A device for cleaning or inspecting the inside of an oil or gas pipeline, or for separating different substances within the pipeline. Named for the pig-like squealing noise made by their progress.

  "Unfortunately, the pig sent to clear the obstruction got lodged in a tight bend, adding to the problem."

• The general-purpose M60 machine gun, considered to be heavy and bulky.

  "Unfortunately, the M60 is about twenty-four pounds and is very unbalanced. You try carrying the pig around the jungle and see how you feel."

• A simple dice game in which players roll the dice as many times as they like, either accumulating a greater score or losing previous points gained.

Meaning

• (of swine) to give birth.

  "The black sow pigged at seven this morning."

• To greedily consume (especially food).

  "They were pigging on the free food at the bar."

• To huddle or lie together like pigs, in one bed.

• To clean (a pipeline) using a pig (the device).