n.1. a. Any of various mammals of the family Suidae, having short legs, hooves with two weight-bearing toes, bristly hair, and a cartilaginous snout used for digging, including the domesticated hog (Sus scrofa subsp. domestica syn. S. domesticus) and wild species such as the bushpig.
b. A domesticated hog, especially when weighing less than 54 kilograms (120 pounds).
c. The edible parts of one of these mammals.
2. a. Informal A person regarded as being piglike, greedy, or disgusting.
b. Derogatory Slang A police officer.
c. Slang A member of the social or political establishment, especially one holding sexist or racist views.
3. a. A crude block of metal, chiefly iron or lead, poured from a smelting furnace.
b. A mold in which such metal is cast.
c. Pig iron.