Definitions of pig:

• noun:   a crude block of metal (lead or iron) poured from a smelting furnace
• noun:   domestic swine
• noun:   mold consisting of a bed of sand in which pig iron is cast
• noun:   a person regarded as greedy and pig-like
• noun:   a coarse obnoxious person
• noun:   uncomplimentary terms for a policeman
• verb:   live like a pig, in squalor
• verb:   give birth
• verb:   eat greedily